diff options
Diffstat (limited to 'libcuda/cuda_runtime_api.cc')
| -rw-r--r-- | libcuda/cuda_runtime_api.cc | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/libcuda/cuda_runtime_api.cc b/libcuda/cuda_runtime_api.cc index 45fe1f6..4739f64 100644 --- a/libcuda/cuda_runtime_api.cc +++ b/libcuda/cuda_runtime_api.cc @@ -1249,6 +1249,31 @@ void setCuobjdumpsassfilename(const char* filename){ extern "C" int cuobjdump_parse(); extern "C" FILE *cuobjdump_in; +//! Return the executable file of the process containing the PTX/SASS code +//! +//! This Function returns the executable file ran by the process. This +//! executable is supposed to contain the PTX/SASS code. It provides workaround +//! for processes running on valgrind by dereferencing /proc/<pid>/exe within the +//! GPGPU-Sim process before calling cuobjdump to extract PTX/SASS. This is +//! needed because valgrind uses x86 emulation to detect memory leak. Other +//! processes (e.g. cuobjdump) reading /proc/<pid>/exe will see the emulator +//! executable instead of the application binary. +//! +std::string get_app_binary(){ + std::stringstream exec_link; + // exec_link << "/proc/" << getpid() << "/exe"; + exec_link << "/proc/self/exe"; + + char self_exe_path[1025]; + ssize_t path_length = readlink(exec_link.str().c_str(), self_exe_path, 1024); + assert(path_length != -1); + self_exe_path[path_length] = '\0'; + + printf("self exe links to: %s\n", self_exe_path); + + return self_exe_path; +} + //! Call cuobjdump to extract everything (-elf -sass -ptx) /*! * This Function extract the whole PTX (for all the files) using cuobjdump @@ -1261,15 +1286,18 @@ void extract_code_using_cuobjdump(){ CUctx_st *context = GPGPUSim_Context(); char command[1000]; - std::stringstream pid; - pid << getpid(); + std::string app_binary = get_app_binary(); char fname[1024]; snprintf(fname,1024,"_cuobjdump_complete_output_XXXXXX"); int fd=mkstemp(fname); close(fd); // Running cuobjdump using dynamic link to current process - snprintf(command,1000,"$CUDA_INSTALL_PATH/bin/cuobjdump -ptx -elf -sass /proc/%s/exe > %s",pid.str().c_str(),fname); + snprintf(command,1000,"md5sum %s ", app_binary.c_str()); + printf("Running md5sum using \"%s\"\n", command); + system(command); + // Running cuobjdump using dynamic link to current process + snprintf(command,1000,"$CUDA_INSTALL_PATH/bin/cuobjdump -ptx -elf -sass %s > %s", app_binary.c_str(), fname); printf("Running cuobjdump using \"%s\"\n", command); bool parse_output = true; int result = system(command); @@ -1304,7 +1332,7 @@ void extract_code_using_cuobjdump(){ //Currently only for cufft std::stringstream cmd; - cmd << "ldd /proc/" << pid.str() << "/exe | grep $CUDA_INSTALL_PATH | awk \'{print $3}\' > _tempfile_.txt"; + cmd << "ldd " << app_binary << " | grep $CUDA_INSTALL_PATH | awk \'{print $3}\' > _tempfile_.txt"; int result = system(cmd.str().c_str()); if(result){ std::cout << "Failed to execute: " << cmd << std::endl; |