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/*
* Copyright 2010-2016 Intel Corporation.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, version 2.1.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*
* Disclaimer: The codes contained in these modules may be specific
* to the Intel Software Development Platform codenamed Knights Ferry,
* and the Intel product codenamed Knights Corner, and are not backward
* compatible with other Intel products. Additionally, Intel will NOT
* support the codes or instruction set in future products.
*
* Intel offers no warranty of any kind regarding the code. This code is
* licensed on an "AS IS" basis and Intel is not obligated to provide
* any support, assistance, installation, training, or other services
* of any kind. Intel is also not obligated to provide any updates,
* enhancements or extensions. Intel specifically disclaims any warranty
* of merchantability, non-infringement, fitness for any particular
* purpose, and any other warranty.
*
* Further, Intel disclaims all liability of any kind, including but
* not limited to liability for infringement of any proprietary rights,
* relating to the use of the code, even if Intel is notified of the
* possibility of such liability. Except as expressly stated in an Intel
* license agreement provided with this code and agreed upon with Intel,
* no license, express or implied, by estoppel or otherwise, to any
* intellectual property rights is granted herein.
*/
#ifndef _COIPROCESS_SOURCE_H
#define _COIPROCESS_SOURCE_H
/** @ingroup COIProcess
* @addtogroup COIProcessSource
@{
* @file source/COIProcess_source.h
*/
#ifndef DOXYGEN_SHOULD_SKIP_THIS
#include "../common/COITypes_common.h"
#include "../common/COIResult_common.h"
#ifdef __cplusplus
extern "C" {
#endif
#endif // DOXYGEN_SHOULD_SKIP_THIS
///////////////////////////////////////////////////////////////////////////////
/// This is a special COIPROCESS handle that can be used to indicate that
/// the source process should be used for an operation.
///
#define COI_PROCESS_SOURCE ((COIPROCESS)-1)
#define COI_MAX_FILE_NAME_LENGTH 256
///////////////////////////////////////////////////////////////////////////////
/// This is a flag for COIProcessCreateFromMemory that indicates the passed in
/// memory pointer is a fat binary file and should not have regular validation.
///
#define COI_FAT_BINARY ((uint64_t)-1)
///////////////////////////////////////////////////////////////////////////////
///
/// Create a remote process on the Sink and start executing its main()
/// function.
///
/// For more details about creating a process see COIProcessCreateFromMemory.
///
/// @param in_Engine
/// [in] A handle retrieved via a call to COIEngineGetHandle() that
/// indicates which device to create the process on. This is
/// necessary because there can be more than one device
/// within the system.
///
/// @param in_pBinaryName
/// [in] Pointer to a null-terminated string that contains the
/// path to the program binary to be instantiated as a process on
/// the sink device. The file name will be accessed via
/// fopen and fread, as such, the passed in binary name must
/// be locatable via these commands. Also, the file name (without
/// directory information) will be used automatically by the system
/// to create the argv[0] of the new process.
///
/// @param in_Argc
/// [in] The number of arguments being passed in to the process in the
/// in_ppArgv parameter.
///
/// @param in_ppArgv
/// [in] An array of strings that represent the arguments being passed
/// in. The system will auto-generate argv[0] using in_pBinaryName and
/// thus that parameter cannot be passed in using in_ppArgv. Instead,
/// in_ppArgv contains the rest of the parameters being passed in.
///
/// @param in_DupEnv
/// [in] A boolean that indicates whether the process that is being
/// created should inherit the environment of the caller.
///
/// @param in_ppAdditionalEnv
/// [in] An array of strings that represent additional environment
/// variables. This parameter must terminate the array with a NULL
/// string. For convenience it is also allowed to be NULL if there are
/// no additional environment variables that need adding. Note that
/// any environment variables specified here will be in addition to
/// but override those that were inherited via in_DupEnv.
///
/// @param in_ProxyActive
/// [in] A boolean that specifies whether the process that is to be
/// created wants I/O proxy support. If this flag is enabled, then
/// stdout and stderr are forwarded back to the calling process's
/// output and error streams.
///
/// @param in_Reserved
/// Reserved for future use, best set at NULL.
///
/// @param in_InitialBufferSpace
/// [in] The initial memory (in bytes) that will be pre-allocated at
/// process creation for use by buffers associated with this remote
/// process. In addition to allocating, Intel(R) Coprocessor Offload
/// Infrastructure (Intel(R) COI) will also fault in the
/// memory during process creation. If the total size of the buffers
/// in use by this process exceed this initial size, memory on the
/// sink may continue to be allocated on demand, as needed, subject
/// to the system constraints on the sink.
///
///@param in_LibrarySearchPath
/// [in] a path to locate dynamic libraries dependencies for the sink
/// application. If not NULL, this path will override the environment
/// variable SINK_LD_LIBRARY_PATH. If NULL it will use
/// SINK_LD_LIBRARY_PATH to locate dependencies.
///
/// @param out_pProcess
/// [out] Handle returned to uniquely identify the process that was
/// created for use in later API calls.
///
/// @return COI_SUCCESS if the remote process was successfully created.
///
/// @return COI_INVALID_POINTER if in_pBinaryName was NULL.
///
/// @return COI_INVALID_FILE if in_pBinaryName is not a "regular file" as
/// determined by stat or if its size is 0.
///
/// @return COI_DOES_NOT_EXIST if in_pBinaryName cannot be found.
///
/// @return See COIProcessCreateFromMemory for additional errors.
///
COIACCESSAPI
COIRESULT
COIProcessCreateFromFile(
COIENGINE in_Engine,
const char *in_pBinaryName,
int in_Argc,
const char **in_ppArgv,
uint8_t in_DupEnv,
const char **in_ppAdditionalEnv,
uint8_t in_ProxyActive,
const char *in_Reserved,
uint64_t in_InitialBufferSpace,
const char *in_LibrarySearchPath,
COIPROCESS *out_pProcess);
///////////////////////////////////////////////////////////////////////////////
///
/// Create a remote process on the Sink and start executing its main()
/// function. This will also automatically load any dependent shared objects
/// on to the device. Once the process is created, remote calls can be
/// initiated by using the RunFunction mechanism found in the COIPipeline APIs.
///
/// If instead of creating a process you only wish to check for dynamic
/// library dependencies set the environment variable
/// SINK_LD_TRACE_LOADED_OBJECTS to be non empty before making this call.
///
/// If there are dynamic link libraries on the source file system that need to
/// be preloaded when the process is created on the device, callers of this
/// API can set the environment variable SINK_LD_PRELOAD to a colon separated
/// list of libraries that need to be copied to the sink and preloaded as part
/// of process creation.
///
/// For more information on how dependencies are loaded, see
/// COIProcessLoadLibraryFromMemory.
///
/// @param in_Engine
/// [in] A handle retrieved via a call to COIEngineGetHandle() that
/// indicates which device to create the process on. This is
/// necessary because there can be more than one device
/// within the system.
///
/// @param in_pBinaryName
/// [in] Pointer to a null-terminated string that contains the name to
/// give the process that will be created. Note that the final name
/// will strip out any directory information from in_pBinaryName and
/// use the file information to generate an argv[0] for the new
/// process.
///
/// @param in_pBinaryBuffer
/// [in] Pointer to a buffer whose contents represent the sink-side
/// process that we want to create.
///
/// @param in_BinaryBufferLength
/// [in] Number of bytes in in_pBinaryBuffer.
///
/// @param in_Argc
/// [in] The number of arguments being passed in to the process in the
/// in_ppArgv parameter.
///
/// @param in_ppArgv
/// [in] An array of strings that represent the arguments being passed
/// in. The system will auto-generate argv[0] using in_pBinaryName and
/// thus that parameter cannot be passed in using in_ppArgv. Instead,
/// in_ppArgv contains the rest of the parameters being passed in.
///
/// @param in_DupEnv
/// [in] A boolean that indicates whether the process that is being
/// created should inherit the environment of the caller.
///
/// @param in_ppAdditionalEnv
/// [in] An array of strings that represent additional environment
/// variables. This parameter must terminate the array with a NULL
/// string. For convenience it is also allowed to be NULL if there are
/// no additional environment variables that need adding. Note that
/// any environment variables specified here will be in addition to
/// but override those that were inherited via in_DupEnv.
///
/// @param in_ProxyActive
/// [in] A boolean that specifies whether the process that is to be
/// created wants I/O proxy support.
///
/// @param in_Reserved
/// Reserved for future use, best set to NULL.
///
/// @param in_InitialBufferSpace
/// [in] The initial memory (in bytes) that will be pre-allocated at
/// process creation for use by buffers associated with this remote
/// process. In addition to allocating, Intel(R) Coprocessor
/// Offload Infrastructure (Intel(R) COI) will also fault in the
/// memory during process creation. If the total size of the buffers
/// in use by this process exceed this initial size, memory on the
/// sink may continue to be allocated on demand, as needed, subject
/// to the system constraints on the sink.
///
/// @param in_LibrarySearchPath
/// [in] A path to locate dynamic libraries dependencies for the sink
/// application. If not NULL, this path will override the environment
/// variable SINK_LD_LIBRARY_PATH. If NULL it will use
/// SINK_LD_LIBRARY_PATH to locate dependencies.
///
/// @param in_FileOfOrigin
/// [in] If not NULL, this parameter indicates the file from which the
/// in_pBinaryBuffer was obtained. This parameter is optional.
///
/// @param in_FileOfOriginOffset
/// [in] If in_FileOfOrigin is not NULL, this parameter indicates the
/// offset within that file where in_pBinaryBuffer begins.
///
/// @param out_pProcess
/// [out] Handle returned to uniquely identify the process that was
/// created for use in later API calls.
///
/// @return COI_SUCCESS if the remote process was successfully created.
///
/// @return COI_INVALID_HANDLE if the in_Engine handle passed in was invalid.
///
/// @return COI_INVALID_POINTER if out_pProcess was NULL.
///
/// @return COI_INVALID_POINTER if in_pBinaryName or in_pBinaryBuffer was NULL.
///
/// @return COI_MISSING_DEPENDENCY if a dependent library is missing from
/// either SINK_LD_LIBRARY_PATH or the in_LibrarySearchPath parameter.
///
/// @return COI_BINARY_AND_HARDWARE_MISMATCH if in_pBinaryName or any of its
/// recursive dependencies were built for a target machine that does
/// not match the engine specified.
///
/// @return COI_RESOURCE_EXHAUSTED if no more COIProcesses can be created,
/// possibly, but not necessarily because in_InitialBufferSpace is too
/// large.
///
/// @return COI_ARGUMENT_MISMATCH if in_Argc is 0 and in_ppArgv is not NULL.
///
/// @return COI_ARGUMENT_MISMATCH if in_Argc is greater than 0 and in_ppArgv is
/// NULL.
///
/// @return COI_OUT_OF_RANGE if in_Argc is less than 0.
///
/// @return COI_OUT_OF_RANGE if the length of in_pBinaryName is greater than or
/// equal to COI_MAX_FILE_NAME_LENGTH.
///
/// @return COI_OUT_OF_RANGE if in_BinaryBufferLength is 0.
///
/// @return COI_TIME_OUT_REACHED if establishing the communication channel with
/// the remote process timed out.
///
/// @return COI_DOES_NOT_EXIST if in_FileOfOrigin is not NULL and does not
/// exist.
///
/// @return COI_ARGUMENT_MISMATCH if in_FileOfOrigin is NULL and
/// in_FileOfOriginOffset is not 0.
///
/// @return COI_INVALID_FILE if in_FileOfOrigin is not a "regular file" as
/// determined by stat or if its size is 0.
///
/// @return COI_OUT_OF_RANGE if in_FileOfOrigin exists but its size is
/// less than in_FileOfOriginOffset + in_BinaryBufferLength.
///
/// @return COI_NOT_INITIALIZED if the environment variable
/// SINK_LD_TRACE_LOADED_OBJECTS is set to a non empty string and there
/// are no errors locating the shared library dependencies.
///
/// @return COI_PROCESS_DIED if at some point during the loading of the remote
/// process the remote process terminated abnormally.
///
/// @return COI_VERSION_MISMATCH if the version of Intel(R) Coprocessor
/// Offload Infrastructure (Intel(R) COI) on the host is not
/// compatible with the version on the device.
///
COIACCESSAPI
COIRESULT
COIProcessCreateFromMemory(
COIENGINE in_Engine,
const char *in_pBinaryName,
const void *in_pBinaryBuffer,
uint64_t in_BinaryBufferLength,
int in_Argc,
const char **in_ppArgv,
uint8_t in_DupEnv,
const char **in_ppAdditionalEnv,
uint8_t in_ProxyActive,
const char *in_Reserved,
uint64_t in_InitialBufferSpace,
const char *in_LibrarySearchPath,
const char *in_FileOfOrigin,
uint64_t in_FileOfOriginOffset,
COIPROCESS *out_pProcess);
//////////////////////////////////////////////////////////////////////////////
///
/// Destroys the indicated process, releasing its resources. Note, this
/// will destroy any outstanding pipelines created in this process as well.
///
/// @param in_Process
/// [in] Process to destroy.
///
/// @param in_WaitForMainTimeout
/// [in] The number of milliseconds to wait for the main() function
/// to return in the sink process before timing out. -1 means to wait
/// indefinitely.
///
/// @param in_ForceDestroy
/// [in] If this flag is set to true, then the sink process will be
/// forcibly terminated after the timeout has been reached. A timeout
/// value of 0 will kill the process immediately, while a timeout of
/// -1 is invalid. If the flag is set to false then a message will
/// be sent to the sink process requesting a clean shutdown. A value
/// of false along with a timeout of 0 does not send a shutdown
/// message, instead simply polls the process to see if it is alive.
/// In most cases this flag should be set to false. If a sink process
/// is not responding then it may be necessary to set this flag to
/// true.
///
/// @param out_pProcessReturn
/// [out] The value returned from the main() function executing in
/// the sink process. This is an optional parameter. If the caller
/// is not interested in the return value from the remote process
/// they may pass in NULL for this parameter. The output value of
/// this pointer is only meaningful if COI_SUCCESS is returned.
///
/// @param out_pTerminationCode
/// [out] This parameter specifies the termination code. This will
/// be 0 if the remote process exited cleanly. If the remote process
/// exited abnormally this will contain the termination code given
/// by the operating system of the remote process. This is an optional
/// parameter and the caller may pass in NULL if they are not
/// interested in the termination code. The output value of this
/// pointer is only meaningful if COI_SUCCESS is returned.
///
/// @return COI_SUCCESS if the process was destroyed.
///
/// @return COI_INVALID_HANDLE if the process handle passed in was invalid.
///
/// @return COI_OUT_OF_RANGE for any negative in_WaitForMainTimeout value
/// except -1.
///
/// @return COI_ARGUMENT_MISMATCH if in_WaitForMainTimeout is -1 and
/// in_ForceDestroy is true.
///
/// @return COI_TIME_OUT_REACHED if the sink process is still running after
/// waiting in_WaitForMainTimeout milliseconds and in_ForceDestroy
/// is false. This is true even if in_WaitForMainTimeout was 0.
/// In this case, out_pProcessReturn and out_pTerminationCode
/// are undefined.
///
COIACCESSAPI
COIRESULT
COIProcessDestroy(
COIPROCESS in_Process,
int32_t in_WaitForMainTimeout,
uint8_t in_ForceDestroy,
int8_t *out_pProcessReturn,
uint32_t *out_pTerminationCode);
#define COI_MAX_FUNCTION_NAME_LENGTH 256
//////////////////////////////////////////////////////////////////////////////
///
/// Given a loaded native process, gets an array of function handles that can
/// be used to schedule run functions on a pipeline associated with that
/// process. See the documentation for COIPipelineRunFunction() for
/// additional information. All functions that are to be retrieved in this
/// fashion must have the define COINATIVEPROCESSEXPORT preceding their type
/// specification. For functions that are written in C++, either the entries
/// in in_pFunctionNameArray in must be pre-mangled, or the functions must be
/// declared as extern "C". It is also necessary to link the binary containing
/// the exported functions with the -rdynamic linker flag.
/// It is possible for this call to successfully find function handles for
/// some of the names passed in but not all of them. If this occurs
/// COI_DOES_NOT_EXIST will return and any handles not found will be returned
/// as NULL.
///
/// @param in_Process
/// [in] Process handle previously returned via COIProcessCreate().
///
/// @param in_NumFunctions
/// [in] Number of function names passed in to the in_pFunctionNames
/// array.
///
/// @param in_ppFunctionNameArray
/// [in] Pointer to an array of null-terminated strings that match
/// the name of functions present in the code of the binary
/// previously loaded via COIProcessCreate(). Note that if a C++
/// function is used, then the string passed in must already be
/// properly name-mangled, or extern "C" must be used for where
/// the function is declared.
///
/// @param out_pFunctionHandleArray
/// [in out] Pointer to a location created by the caller large
/// enough to hold an array of COIFUNCTION sized elements that has
/// in_numFunctions entries in the array.
///
/// @return COI_SUCCESS if all function names indicated were found.
///
/// @return COI_INVALID_HANDLE if the in_Process handle passed in was invalid.
///
/// @return COI_OUT_OF_RANGE if in_NumFunctions is zero.
///
/// @return COI_INVALID_POINTER if the in_ppFunctionNameArray or
/// out_pFunctionHandleArray pointers was NULL.
///
/// @return COI_DOES_NOT_EXIST if one or more function names were not
/// found. To determine the function names that were not found,
/// check which elements in the out_pFunctionHandleArray
/// are set to NULL.
///
/// @return COI_OUT_OF_RANGE if any of the null-terminated strings passed in
/// via in_ppFunctionNameArray were more than
/// COI_MAX_FUNCTION_NAME_LENGTH characters in length including
/// the null.
///
/// @warning This operation can take several milliseconds so it is recommended
/// that it only be done at load time.
///
COIACCESSAPI
COIRESULT
COIProcessGetFunctionHandles(
COIPROCESS in_Process,
uint32_t in_NumFunctions,
const char **in_ppFunctionNameArray,
COIFUNCTION *out_pFunctionHandleArray);
#if COI_LIBRARY_VERSION >= 2
/// @name COIProcessLoadLibrary* flags, named after the corresponding
/// RTLD flags that are passed into dlopen().
/// Please consult a Linux manual for more information about these flags.
//@{
#define COI_LOADLIBRARY_LOCAL 0x00000
#define COI_LOADLIBRARY_GLOBAL 0x00100
#define COI_LOADLIBRARY_LAZY 0x00001
#define COI_LOADLIBRARY_NOW 0x00002
#define COI_LOADLIBRARY_NOLOAD 0x00004
#define COI_LOADLIBRARY_DEEPBIND 0x00008
#define COI_LOADLIBRARY_NODELETE 0x01000
/// Flags to replicate the behaviour of the original version of
/// COIProcessLoadLibrary* APIs.
#define COI_LOADLIBRARY_V1_FLAGS (COI_LOADLIBRARY_GLOBAL|COI_LOADLIBRARY_NOW)
//@}
#endif
//////////////////////////////////////////////////////////////////////////////
///
/// Loads a shared library into the specified remote process, akin to using
/// dlopen() on a local process in Linux or LoadLibrary() in Windows.
/// Dependencies for this library that are not listed with absolute paths
/// are searched for first in current working directory, then in the
/// colon-delimited paths in the environment variable SINK_LD_LIBRARY_PATH,
/// and finally on the sink in the standard search paths as defined by the
/// sink's operating system / dynamic loader.
///
/// @param in_Process
/// [in] Process to load the library into.
///
/// @param in_pLibraryBuffer
/// [in] The memory buffer containing the shared library to load.
///
/// @param in_LibraryBufferLength
/// [in] The number of bytes in the memory buffer in_pLibraryBuffer.
///
/// @param in_pLibraryName
/// [in] Name for the shared library. This optional parameter can
/// be specified in case the dynamic library doesn't have an
/// SO_NAME field. If specified, it will take precedence over
/// the SO_NAME if it exists. If it is not specified then
/// the library must have a valid SO_NAME field.
///
///@param in_LibrarySearchPath
/// [in] A path to locate dynamic libraries dependencies for the
/// library being loaded. If not NULL, this path will override the
/// environment variable SINK_LD_LIBRARY_PATH. If NULL it will use
/// SINK_LD_LIBRARY_PATH to locate dependencies.
///
///@param in_LibrarySearchPath
/// [in] A path to locate dynamic libraries dependencies for the sink
/// application. If not NULL, this path will override the environment
/// variable SINK_LD_LIBRARY_PATH. If NULL it will use
/// SINK_LD_LIBRARY_PATH to locate dependencies.
///
/// @param in_FileOfOrigin
/// [in] If not NULL, this parameter indicates the file from which the
/// in_pBinaryBuffer was obtained. This parameter is optional.
///
/// @param in_FileOfOriginOffset
/// [in] If in_FileOfOrigin is not NULL, this parameter indicates the
/// offset within that file where in_pBinaryBuffer begins.
///
#if COI_LIBRARY_VERSION >= 2
/// @param in_Flags
/// [in] Bitmask of the flags that will be passed in as the dlopen()
/// "flag" parameter on the sink.
///
#endif
///
/// @param out_pLibrary
/// [out] If COI_SUCCESS or COI_ALREADY_EXISTS is returned, the handle
/// that uniquely identifies the loaded library.
///
/// @return COI_SUCCESS if the library was successfully loaded.
///
/// @return COI_INVALID_HANDLE if the process handle passed in was invalid.
///
/// @return COI_OUT_OF_RANGE if in_LibraryBufferLength is 0.
///
/// @return COI_INVALID_FILE if in_pLibraryBuffer does not represent a valid
/// shared library file.
///
/// @return COI_MISSING_DEPENDENCY if a dependent library is missing from
/// either SINK_LD_LIBRARY_PATH or the in_LibrarySearchPath parameter.
///
/// @return COI_ARGUMENT_MISMATCH if the shared library is missing an SONAME
/// and in_pLibraryName is NULL.
///
/// @return COI_ARGUMENT_MISMATCH if in_pLibraryName is the same as that of
/// any of the dependencies (recursive) of the library being loaded.
///
/// @return COI_ALREADY_EXISTS if there is an existing COILIBRARY handle
/// that identifies this library, and this COILIBRARY hasn't been
/// unloaded yet.
///
/// @return COI_BINARY_AND_HARDWARE_MISMATCH if the target machine of the
/// binary or any of its recursive dependencies does not match the
/// engine associated with in_Process.
///
/// @return COI_UNDEFINED_SYMBOL if we are unable to load the library due to
/// an undefined symbol.
///
/// @return COI_PROCESS_DIED if loading the library on the device caused
/// the remote process to terminate.
///
/// @return COI_DOES_NOT_EXIST if in_FileOfOrigin is not NULL and does not
/// exist.
///
/// @return COI_ARGUMENT_MISMATCH if in_FileOfOrigin is NULL and
/// in_FileOfOriginOffset is not 0.
///
/// @return COI_INVALID_FILE if in_FileOfOrigin is not a "regular file" as
/// determined by stat or if its size is 0.
///
/// @return COI_OUT_OF_RANGE if in_FileOfOrigin exists but its size is
/// less than in_FileOfOriginOffset + in_BinaryBufferLength.
///
/// @return COI_INVALID_POINTER if out_pLibrary or in_pLibraryBuffer are NULL.
///
#if COI_LIBRARY_VERSION >= 2
COIACCESSAPI
COIRESULT
COIProcessLoadLibraryFromMemory(
COIPROCESS in_Process,
const void *in_pLibraryBuffer,
uint64_t in_LibraryBufferLength,
const char *in_pLibraryName,
const char *in_LibrarySearchPath,
const char *in_FileOfOrigin,
uint64_t in_FileOfOriginOffset,
uint32_t in_Flags,
COILIBRARY *out_pLibrary);
__asm__(".symver COIProcessLoadLibraryFromMemory,"
"COIProcessLoadLibraryFromMemory@COI_2.0");
#else
COIRESULT
COIProcessLoadLibraryFromMemory(
COIPROCESS in_Process,
const void *in_pLibraryBuffer,
uint64_t in_LibraryBufferLength,
const char *in_pLibraryName,
const char *in_LibrarySearchPath,
const char *in_FileOfOrigin,
uint64_t in_FileOfOriginOffset,
COILIBRARY *out_pLibrary);
__asm__(".symver COIProcessLoadLibraryFromMemory,"
"COIProcessLoadLibraryFromMemory@COI_1.0");
#endif
//////////////////////////////////////////////////////////////////////////////
///
/// Loads a shared library into the specified remote process, akin to using
/// dlopen() on a local process in Linux or LoadLibrary() in Windows.
///
/// For more details, see COIProcessLoadLibraryFromMemory.
///
/// @param in_Process
/// [in] Process to load the library into.
///
/// @param in_pFileName
/// [in] The name of the shared library file on the source's file
/// system that is being loaded. If the file name is not an absolute
/// path, the file is searched for in the same manner as dependencies.
///
/// @param in_pLibraryName
/// [in] Name for the shared library. This optional parameter can
/// be specified in case the dynamic library doesn't have an
/// SO_NAME field. If specified, it will take precedence over
/// the SO_NAME if it exists. If it is not specified then
/// the library must have a valid SO_NAME field.
///
///@param in_LibrarySearchPath
/// [in] a path to locate dynamic libraries dependencies for the
/// library being loaded. If not NULL, this path will override the
/// environment variable SINK_LD_LIBRARY_PATH. If NULL it will use
/// SINK_LD_LIBRARY_PATH to locate dependencies.
///
#if COI_LIBRARY_VERSION >= 2
/// @param in_Flags
/// [in] Bitmask of the flags that will be passed in as the dlopen()
/// "flag" parameter on the sink.
///
#endif
///
/// @param out_pLibrary
/// [out] If COI_SUCCESS or COI_ALREADY_EXISTS is returned, the handle
/// that uniquely identifies the loaded library.
///
/// @return COI_SUCCESS if the library was successfully loaded.
///
/// @return COI_INVALID_POINTER if in_pFileName is NULL.
///
/// @return COI_DOES_NOT_EXIST if in_pFileName cannot be found.
///
/// @return COI_INVALID_FILE if the file is not a valid shared library.
///
/// @return See COIProcessLoadLibraryFromMemory for additional errors.
///
#if COI_LIBRARY_VERSION >= 2
COIACCESSAPI
COIRESULT
COIProcessLoadLibraryFromFile(
COIPROCESS in_Process,
const char *in_pFileName,
const char *in_pLibraryName,
const char *in_LibrarySearchPath,
uint32_t in_Flags,
COILIBRARY *out_pLibrary);
__asm__(".symver COIProcessLoadLibraryFromFile,"
"COIProcessLoadLibraryFromFile@COI_2.0");
#else
COIRESULT
COIProcessLoadLibraryFromFile(
COIPROCESS in_Process,
const char *in_pFileName,
const char *in_pLibraryName,
const char *in_LibrarySearchPath,
COILIBRARY *out_pLibrary);
__asm__(".symver COIProcessLoadLibraryFromFile,"
"COIProcessLoadLibraryFromFile@COI_1.0");
#endif
//////////////////////////////////////////////////////////////////////////////
///
/// Unloads a a previously loaded shared library from the specified
/// remote process.
///
/// @param in_Process
/// [in] Process that we are unloading a library from.
///
/// @param in_Library
/// [in] Library that we want to unload.
///
/// @return COI_SUCCESS if the library was successfully loaded.
///
/// @return COI_INVALID_HANDLE if the process or library handle were invalid.
///
COIACCESSAPI
COIRESULT
COIProcessUnloadLibrary(
COIPROCESS in_Process,
COILIBRARY in_Library);
//////////////////////////////////////////////////////////////////////////////
///
/// Registers shared libraries that are already in the host process's memory
/// to be used during the shared library dependency resolution steps that take
/// place during subsequent calls to COIProcessCreate* and
/// COIProcessLoadLibrary*. If listed as a dependency, the registered library
/// will be used to satisfy the dependency, even if there is another library
/// on disk that also satisfies that dependency.
///
/// Addresses registered must remain valid during subsequent calls to
/// COIProcessCreate* and COIProcessLoadLibrary*.
///
/// If the Sink is Linux, the shared libraries must have a library name
/// (DT_SONAME field). On most compilers this means built with -soname.
///
/// If successful, this API registers all the libraries. Otherwise none
/// are registered.
///
/// @param in_NumLibraries
/// [in] The number of libraries that are being registered.
///
/// @param in_ppLibraryArray
/// [in] An array of pointers that point to the starting addresses
/// of the libraries.
///
/// @param in_pLibrarySizeArray
/// [in] An array of pointers that point to the number of bytes in
/// each of the libraries.
///
/// @param in_ppFileOfOriginArray
/// [in] An array of strings indicating the file from which the
/// library was obtained. This parameter is optional. Elements
/// in the array may be set to NULL.
///
/// @param in_pFileOfOriginOffSetArray
/// [in] If the corresponding entry in in_ppFileOfOriginArray is not
/// NULL, this parameter indicates the offsets within those files
/// where the corresponding libraries begin.
///
/// @return COI_SUCCESS if the libraries were registered successfully.
///
/// @return COI_OUT_OF_RANGE if in_NumLibraries is 0.
///
/// @return COI_INVALID_POINTER if in_ppLibraryArray or in_pLibrarySizeArray
/// are NULL.
///
/// @return COI_INVALID_POINTER if any of the pointers in in_ppLibraryArray
/// are NULL.
///
/// @return COI_OUT_OF_RANGE if any of the values in in_pLibrarySizeArray is 0.
///
/// @return COI_ARGUMENT_MISMATCH if either one of in_ppFileOfOriginArray
/// and in_pFileOfOriginOffSetArray is NULL and the other is not.
///
/// @return COI_OUT_OF_RANGE if one of the addresses being registered does not
/// represent a valid library.
///
COIACCESSAPI
COIRESULT
COIProcessRegisterLibraries(
uint32_t in_NumLibraries,
const void **in_ppLibraryArray,
const uint64_t *in_pLibrarySizeArray,
const char **in_ppFileOfOriginArray,
const uint64_t *in_pFileOfOriginOffSetArray);
//////////////////////////////////////////////////////////////////////////////
/// The user can choose to have notifications for these internal events
/// so that they can build their own profiling and performance layer on
/// top of Intel(R) Coprocessor Offload Infrastructure (Intel(R) COI).
///
typedef enum COI_NOTIFICATIONS
{
/// This event occurs when all explicit and implicit dependencies are
/// satisfied and Intel(R) Coprocessor Offload Infrastructure
/// (Intel(R) COI) schedules the run function to begin execution.
RUN_FUNCTION_READY = 0,
/// This event occurs just before the run function actually starts
/// executing. There may be some latency between the ready and start
/// events if other run functions are already queued and ready to run.
RUN_FUNCTION_START,
/// This event occurs when the run function finishes. This is when the
/// completion event for that run function would be signaled.
RUN_FUNCTION_COMPLETE,
/// This event occurs when all explicit and implicit dependencies are
/// met for the pending buffer operation. Assuming buffer needs to be
/// moved, copied, read, etc... Will not be invoked if no actual memory
/// is moved, copied, read, etc. This means that COIBufferUnmap will
/// never result in a callback as it simply updates the status of the
/// buffer but doesn't initiate any data movement. COIBufferMap,
/// COIBufferSetState, COIBufferWrite, COIBufferRead and COIBufferCopy
/// do initiate data movement and therefore will invoke the callback.
BUFFER_OPERATION_READY,
/// This event occurs when the buffer operation is completed.
BUFFER_OPERATION_COMPLETE,
/// This event occurs when a user event is signaled from the remotely
/// a sink process. Local (source triggered) events do not trigger this.
USER_EVENT_SIGNALED
} COI_NOTIFICATIONS;
//////////////////////////////////////////////////////////////////////////////
///
/// A callback that will be invoked to notify the user of an internal
/// Intel(R) Coprocessor Offload Infrastructure (Intel(R) COI)
/// event. Note that the callback is registered per process so any of the
/// above notifications that happen on the registered process will receive
/// the callback.
/// As with any callback mechanism it is up to the user to make sure that
/// there are no possible deadlocks due to reentrancy (i.e. the callback being
/// invoked in the same context that triggered the notification) and also
/// that the callback does not slow down overall processing. If the user
/// performs too much work within the callback it could delay further
/// processing. The callback will be invoked prior to the signaling of
/// the corresponding COIEvent. For example, if a user is waiting
/// for a COIEvent associated with a run function completing they will
/// receive the callback before the COIEvent is marked as signaled.
///
///
/// @param in_Type
/// [in] The type of internal event that has occurred.
///
/// @param in_Process
/// [in] The process associated with the operation.
///
/// @param in_Event
/// [in] The completion event that is associated with the
/// operation that is being notified.
///
/// @param in_UserData
/// [in] Opaque data that was provided when the callback was
/// registered. Intel(R) Coprocessor Offload Infrastructure (Intel(R) COI)
/// simply passes this back to the user so that
/// they can interpret it as they choose.
///
typedef void (*COI_NOTIFICATION_CALLBACK)(
COI_NOTIFICATIONS in_Type,
COIPROCESS in_Process,
COIEVENT in_Event,
const void *in_UserData);
//////////////////////////////////////////////////////////////////////////////
///
/// Register a callback to be invoked to notify that an internal
/// Intel(R) Coprocessor Offload Infrastructure (Intel(R) COI) event
/// has occured on the process that is associated with the callback.
/// Note that it is legal to have more than one callback registered with
/// a given process but those must all be unique callback pointers.
/// Note that setting a UserData value with COINotificationCallbackSetContext
/// will override a value set when registering the callback.
///
/// @param in_Process
/// [in] Process that the callback is associated with. The callback
/// will only be invoked to notify an event for this specific process.
///
/// @param in_Callback
/// [in] Pointer to a user function used to signal a notification.
///
/// @param in_UserData
/// [in] Opaque data to pass to the callback when it is invoked.
///
/// @return COI_SUCCESS if the callback was registered successfully.
///
/// @return COI_INVALID_HANDLE if the in_Process parameter does not identify
/// a valid process.
///
/// @return COI_INVALID_POINTER if the in_Callback parameter is NULL.
///
/// @return COI_ALREADY_EXISTS if the user attempts to reregister the same
/// callback for a process.
///
COIACCESSAPI
COIRESULT COIRegisterNotificationCallback(
COIPROCESS in_Process,
COI_NOTIFICATION_CALLBACK in_Callback,
const void *in_UserData);
//////////////////////////////////////////////////////////////////////////////
///
/// Unregisters a callback, notifications will no longer be signaled.
///
/// @param in_Process
/// [in] Process that we are unregistering.
///
/// @param in_Callback
/// [in] The specific callback to unregister.
///
/// @return COI_SUCCESS if the callback was unregistered.
///
/// @return COI_INVALID_HANDLE if the in_Process parameter does not identify
/// a valid process.
///
/// @return COI_INVALID_POINTER if the in_Callback parameter is NULL.
///
/// @return COI_DOES_NOT_EXIST if in_Callback was not previously registered
/// for in_Process.
///
COIACCESSAPI
COIRESULT COIUnregisterNotificationCallback(
COIPROCESS in_Process,
COI_NOTIFICATION_CALLBACK in_Callback);
//////////////////////////////////////////////////////////////////////////////
///
/// Set the user data that will be returned in the notification callback.
/// This data is sticky and per thread so must be set prior to the
/// Intel(R) Coprocessor Offload Infrastructure (Intel(R) COI)
/// operation being invoked. If you wish to set the context to be returned
/// for a specific instance of a user event notification then the context
/// must be set using this API prior to registering that user event with
/// COIEventRegisterUserEvent.
/// The value may be set prior to each Intel(R) Coprocessor Offload
/// Infrastructure (Intel(R) COI) operation being called to
/// effectively have a unique UserData per callback.
/// Setting this value overrides any value that was set when the
/// callback was registered and will also override any future registrations
/// that occur.
///
/// @param in_UserData
/// [in] Opaque data to pass to the callback when it is invoked.
/// Note that this data is set per thread.
///
COIACCESSAPI
void COINotificationCallbackSetContext(
const void *in_UserData);
/// @name COIProcessSetCacheSize flags.
/// Flags are divided into two categories: _MODE_ and _ACTION_
/// only one of each is valid with each call.
/// _ACTIONS_ and _MODES_ should be bitwised OR'ed together, i.e. |
//@{
/// Current set of DEFINED bits for _MODE_, can be used
/// to clear or check fields, not useful to pass into APIs. Used internally.
#define COI_CACHE_MODE_MASK 0x00000007
/// Flag to indicate to keep the previous mode of operation. By default
/// this would be COI_CACHE_MODE_ONDEMAND_SYNC. As of this release
/// This is the only mode available. This mode is valid with _ACTION_
/// flags.
#define COI_CACHE_MODE_NOCHANGE 0x00000001
/// Mode of operation that indicates that COI will allocate physical
/// cache memory exactly when it is is needed. COIPipeline execution in
/// the given process will momentarily block until the allocation request
/// is completed. This is and has been the default mode.
#define COI_CACHE_MODE_ONDEMAND_SYNC 0x00000002
/// Not yet implemented. Future mode that will not stall a COIPipeline
/// but prefer eviction/paging if possible as to immediately execute pipeline.
/// At the same time, enqueue background requests to allocate extra cache
/// so as to provide optimze behavior on subsequent runs.
#define COI_CACHE_MODE_ONDEMAND_ASYNC 0x00000004
/// Current set of DEFINED bits for _ACTION_ can be used
/// to clear fields, but not useful to pass into API's. Used internally.
#define COI_CACHE_ACTION_MASK 0x00070000
/// No action requested. With this flag specified
/// it is recommended to NOT provide a out_pCompletion event,
/// as with this flag, modes and values are immediately set.
/// This is valid with _MODE_ flags.
#define COI_CACHE_ACTION_NONE 0x00010000
/// This _ACTION_ flag will immediately attempt to increase the cache
/// physical memory size to the current set pool size(s). Used to
/// pre-allocate memory on remote processes, so that runfunction will
/// enqueue faster. Also may prevent unused buffer eviction from process
/// reducing overhead in trade for memory allocation cost.
#define COI_CACHE_ACTION_GROW_NOW 0x00020000
/// Not yet implemented. Future _ACTION_ that will attempt to find unused
/// allocated cache and free it, with the express goal of reducing the
/// footprint on the remote process down to the value of the currently set
/// pool size(s).
#define COI_CACHE_ACTION_FREE_UNUSED 0x00040000
//@}
//////////////////////////////////////////////////////////////////////////////
///
/// Set the minimum preferred COIProcess cache size. By default these values
/// are set to 1GB. With the default size of 1GB, Intel(R) COI will only
/// grow the cache with each new buffer up until the set limit is consumed,
/// after which, only required to accommodate additional buffers.
/// This means that after the cache preference is met, a process will act
/// as conservative as possible for memory consumption.
/// This API will allow users to adjust memory consumption aggressiveness.
///
/// Additional performance may be gained if the user sets a value higher than
/// default. With high memory consumption user can choose to trade performance
/// between memory allocation cost and transfer speeds to and from the
/// remote process. A last consideration is that if buffers are used only
/// once, it may be best to keep a small cache size, or ensure buffers are
/// fully destroyed after their use.
///
/// Adjusting this value to high may result in out of resource conditions.
///
/// @param in_pProcess
/// [in] Handle to uniquely identify the process for which the cache
/// is to be adjusted.
///
/// @param in_HugePagePoolSize
/// [in] The suggested size of the remote huge page cache in bytes.
/// This value defaults to 1GB. A process will only allocate cache
/// memory if the current cache is smaller than this limit, or it is
/// absolutely necessary to fulfill a request, but preferring to
/// re-use existing memory and paging unused buffers back to the host
/// Increasing this value will cause a process to
/// aggressively allocate memory on demand up to this value, before
/// evicting/paging memory from the remote process back to the host
/// process.
///
/// The net result is that memory consumption is increased, but the
/// user can 'cache' more buffers on the remote process. More time
/// may be spent during first use of run functions as more memory
/// may be allocated, but subsequent run functions will likely
/// see an increase in queueing performance as the data is already
/// valid in the remote process.
///
/// Users should tune this value for optimum performance balanced
/// against memory consumption. This value does not affect 4K page
/// cache. Please use in_SmallPagePoolSize for 4K pages.
///
/// @param in_HugeFlags
/// [in] Flags to select mode or action for huge page cache. One _MODE_
/// and one _ACTION_ flag are specified together. Default _MODE_ is
/// COI_CACHE_MODE_ONDEMAND_SYNC. See all COI_CACHE_MODE_* and
/// COI_CACHE_ACTION_* for other modes and actions. Default _ACTION_
/// is COI_CACHE_ACTION_NONE.
///
/// @param in_SmallPagePoolSize
/// [in] The suggested size of the remote 4K cache in bytes. Same
/// function as in_HugePagePoolSize but affecting only 4K page cache.
/// Defaults to 1GB.
///
/// @param in_SmallFlags
/// [in] Flags to select mode or action for 4K page cache. One _MODE_
/// and one _ACTION_ flag are be specified together. Default _MODE_ is
/// COI_CACHE_MODE_ONDEMAND_SYNC. See all COI_CACHE_MODE_* and
/// COI_CACHE_ACTION_* for other modes and actions.
///
/// @param in_NumDependencies
/// [in] The number of dependencies specified in the in_pDependencies
/// array. This may be 0 if the caller does not want the call to
/// wait for any events to be signaled.
///
/// @param in_pDependencies
/// [in] An optional array of handles to previously created COIEVENT
/// objects that this operation will wait for before starting.
/// This allows the user to create dependencies between asynchronous
/// calls and other operations such as run functions. The user may
/// pass in NULL if they do not wish to wait for any dependencies.
/// Only useful with _ACTION_ flags, otherwise there is no action
/// to wait on. All _MODE_ changes happen immediately.
///
/// @param out_pCompletion
/// [out] An optional pointer to a COIEVENT object that will be
/// signaled when the operation is complete. The user may pass in
/// NULL if the user wants the operation to block until completed.
/// Note: This flag is not useful unless paired with a
/// valid _ACTION_ flag.
///
/// @return COI_SUCCESS if the cache was successfully adjusted. In case of
/// valid flags including _ACTION_, if out_pCompletion was specified,
/// this does not indicate the operation succeeded, but rather only
/// it was successfully queued. For further information see
/// that COIEventWait() for getting return values.
///
/// @return COI_INVALID_HANDLE if the in_Process handle passed in was invalid.
///
/// @return COI_RESOURCE_EXHAUSTED if no more cache can be created,
/// possibly, but not necessarily because a pool size was set to large
/// and COI_CACHE_ACTION_GROW_NOW was specified.
///
/// @return COI_NOT_SUPPORTED if more than one _MODE_ or _ACTION_ was
/// specified.
///
/// @return COI_NOT_SUPPORTED if an invalid _MODE_ or _ACTION_ was
/// specified.
///
/// @return COI_ARGUMENT_MISMATCH if in_NumDependencies is non-zero while
/// in_pDependencies was passed in as NULL.
///
/// @return COI_OUT_OF_RANGE if one of the pool sizes was invalid.
///
/// @return COI_PROCESS_DIED if at some point during the mode or action the
/// remote process terminated abnormally. Possible due to an out of
/// memory condition.
///
COIACCESSAPI
COIRESULT COIProcessSetCacheSize(
const COIPROCESS in_Process,
const uint64_t in_HugePagePoolSize,
const uint32_t in_HugeFlags,
const uint64_t in_SmallPagePoolSize,
const uint32_t in_SmallFlags,
uint32_t in_NumDependencies,
const COIEVENT *in_pDependencies,
COIEVENT *out_pCompletion);
//////////////////////////////////////////////////////////////////////////////
/// These are the different modes of operation that can be selected for
/// the COI_DMA_MODE by the API COIProcessConfigureDMA. They allow the user
/// to customize the DMA layer behaviour.
///
typedef enum COI_DMA_MODE
{
/// This mode will use one common logical channel for all DMA operations.
/// Using this mode requires a channel count of one.
COI_DMA_MODE_SINGLE = 0,
/// This mode will dedicate on logical channel for write operations
/// and one logical channel for read operations. Requires a minimum of
/// two logical channels, if more than two are used they are ignored
/// in the current implementation.
COI_DMA_MODE_READ_WRITE,
/// This mode is not yet implemented and is a placeholder for future
/// releases. Check here for updates when it is implemented.
/// Will require a minimum of two logical channels and a maximum
/// of four channels.
COI_DMA_MODE_ROUND_ROBIN,
/// Reserved for internal use.
COI_DMA_RESERVED
} COI_DMA_MODE;
//////////////////////////////////////////////////////////////////////////////
///
/// Set the number and mode of the physical DMA channels that each COIProcess
/// will establish during COIProcess creation.
///
/// By default the runtime will operate in COI_DMA_MODE_SINGLE mode.
/// This API is intended to be called before COIProcessCreateFromFile() or
/// COIProcessCreateFromMemory(). The values are stored globally and will
/// be used by the creation API's. It is possible to call this API once
/// before each new COIPROCESS is created and thus have each COIPROCESS
/// run in different modes. It is not possible to change the mode on an
/// existing COIPROCESS.
///
/// The larger number of logical connections requested will impose a
/// performance penalty on the COIBUFFER creation API's, but unlock better
/// parallelism for DMA transfers during runtime.
///
/// A maximum value of four (4) channels is available today, but current
/// implementation will only take advantage of two DMA channels. The option
/// is left available for programmers to use in case future implementations
/// provide performance advantages.
///
/// It is important to note that for some operations that enabling this
/// options may increase parallelism and require the user to enforce
/// explicit dependencies for operations on the same buffers. See documentation
/// for COIBufferRead/Write/Copy operations for more details.
///
/// @param in_Channels
/// [in] Number of logical connections to the remote COIProcess that
/// the runtime will establish and use for DMA transfer requests.
/// Will be ignored if in_Mode is set to COI_DMA_MODE_SINGLE.
///
/// @param in_Mode
/// [in] The mode of operation in which the runtime will use the
/// logical connections to the remote COIProcess.
///
/// @return COI_SUCCESS if the mode and number of DMA channels requested
/// is valid. The actual create creation of channels and modes is
/// done during COIProcessCreateFromFile() and
/// COIProcessCreateFromMemory().
///
/// @return COI_NOT_SUPPORTED if an invalid value for in_Channels or
/// in_Mode was requested.
///
/// @return COI_ARGUMENT_MISMATCH if an invalid combination of in_Channels and
/// in_Mode was requested. Example could be 2 channels with
/// COI_DMA_MODE_SINGLE, or 1 channel with COI_DMA_MODE_READ_WRITE.
///
COIACCESSAPI
COIRESULT COIProcessConfigureDMA(
const uint64_t in_Channels,
const COI_DMA_MODE in_Mode);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* _COIPROCESS_SOURCE_H */
/*! @} */
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