Jonathan R. Madsen
32b15fe7b7
* Always print PID in log messages * omnitrace-dl updates - omnitrace_preload does not call omnitrace_init or omnitrace_init_tooling - omnitrace_preload will call omnitrace_set_mpi if OMNITRACE_USE_MPI or OMNITRACE_USE_MPIP in the env is true but not call it otherwise because doing so either overrides OMNITRACE_USE_PID (when true) or disable mpip from initialization (when false) and the MPI init can be caught later and override OMNITRACE_USE_PID * config updates - set_setting_value sets user update type - remove volatile from get_settings_configured - don't override settings::default_process_suffix - don't kill process in omnitrace_exit_action - set_state ignores updating state if >= State::Finalized * Handle state > State::Finalized * fork gotcha updates - unsets LD_PRELOAD - sets OMNITRACE_ROOT_PROCESS - sets OMNITRACE_CHILD_PROCESS * libomnitrace library.cpp updates - basic_bundle for fini metrics - handle finalization from child process * sampling updates - sampling::shutdown handles when child process * Add example and test using fork * Update run-ci script to support not submitting * Tweak test envs * Update build flags when codecov enabled * remove unnecessary includes of sampling header * Replace mpi copy/fini static lambda with free-funcs * Update codecov job * Fix OMPT segfaults after finalization * Miscellaneous updates after rebase * fixes for causal profiling * revert some run-ci.sh changes * Disable storing env in sampling::shutdown * formatting fix * Update timemory submodule - fixed occasional synchronization issues with allocator offloading - exclude protozero:: from internal samples * improve root/child process detection - avoid omnitrace_finalize in MPI when child process - revert some testing tweaks
79 строки
1.7 KiB
C++
79 строки
1.7 KiB
C++
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#include <chrono>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <string>
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#include <sys/wait.h>
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#include <thread>
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#include <unistd.h>
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void
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print_info(const char* _name)
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{
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printf("[%s] pid = %i, ppid = %i\n", _name, getpid(), getppid());
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}
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int
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run(const char* _name, int nchildren)
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{
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for(int i = 0; i < nchildren; ++i)
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{
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auto _run = [i, _name]() {
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pid_t _pid = fork();
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if(_pid == 0)
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{
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// child code
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print_info(_name);
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auto _sleep = [=]() {
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std::this_thread::sleep_for(std::chrono::seconds{ i + 1 });
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};
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std::thread{ _sleep }.join();
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exit(EXIT_SUCCESS);
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}
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};
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std::thread{ _run }.join();
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//_run();
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}
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int _status = 0;
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pid_t _wait_pid = 0;
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// parent waits for all the child processes
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while((_wait_pid = wait(&_status)) > 0)
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{
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printf("[%s][%i] returned from wait with pid = %i :: ", _name, getpid(),
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_wait_pid);
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if(WIFEXITED(_status))
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{
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printf("exited, status=%d\n", WEXITSTATUS(_status));
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}
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else if(WIFSIGNALED(_status))
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{
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printf("killed by signal %d\n", WTERMSIG(_status));
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}
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else if(WIFSTOPPED(_status))
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{
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printf("stopped by signal %d\n", WSTOPSIG(_status));
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}
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else if(WIFCONTINUED(_status))
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{
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printf("continued\n");
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}
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else
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{
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printf("unknown\n");
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}
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}
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return _status;
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}
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int
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main(int argc, char** argv)
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{
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int _n = 4;
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if(argc > 1) _n = std::stoi(argv[1]);
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print_info(argv[0]);
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return run(argv[0], _n);
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}
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