Jonathan R. Madsen
3e2fa69a14
* Update perfetto args.gn.in - remove enable_perfetto_tools_trace_to_text (unused) * core timeout implementation - requires OMNITRACE_CI=ON - requires OMNITRACE_CI_TIMEOUT=<sec> - adds pthread_self and std::this_thread::get_id to thread info - pthread_create_gotcha stores native handles (pthread_self) * Testing updates - improve detection of segfault/failures with PASS_REGEX exists - add OMNITRACE_CI_TIMEOUT env variable to all tests * Line-info in releases - e.g. -g1 + more options to minimize size of debug info * Fix typo in config exit action message * OMNITRACE_UNLIKELY around debug/verbose messages * format fixes * Overflow tests + capability check * transpose example update - link to threads library * roctracer/rocprofiler update - in ROCm 5.5.0, cannot include rocprofiler.h and roctracer.h in same file due to conflicting enum defs - Moved HSA tracing setup/shutdown to component::roctracer * roctracer update - fix definition of roctracer::setup when disabled * Update fork example - detach threads on main PID - flush io outputs when printing info * Update overflow tests - pass regular expressions - overflow on PERF_COUNT_SW_CPU_CLOCK event * fork gotcha update - use getpid() instead of getppid() * update fork example - wait on threads calling fork * timeout update - wait on timeout thread to launch before proceeding
95 líneas
2.2 KiB
C++
95 líneas
2.2 KiB
C++
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#include <omnitrace/user.h>
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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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#include <vector>
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void
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print_info(const char* _name)
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{
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fflush(stdout);
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fflush(stderr);
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printf("[%s] pid = %i, ppid = %i\n", _name, getpid(), getppid());
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fflush(stdout);
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fflush(stderr);
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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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auto _threads = std::vector<std::thread>{};
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for(int i = 0; i < nchildren; ++i)
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{
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omnitrace_user_push_region("launch_child");
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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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_threads.emplace_back(_run);
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omnitrace_user_pop_region("launch_child");
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}
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omnitrace_user_push_region("wait_for_children");
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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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for(auto& itr : _threads)
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itr.join();
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omnitrace_user_pop_region("wait_for_children");
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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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