/* * * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* Posix implementation for gpr threads. */ #include <grpc/support/port_platform.h> #ifdef GPR_POSIX_SYNC #include <grpc/support/alloc.h> #include <grpc/support/log.h> #include <grpc/support/thd.h> #include <grpc/support/useful.h> #include <pthread.h> #include <stdlib.h> #include <string.h> struct thd_arg { void (*body)(void *arg); /* body of a thread */ void *arg; /* argument to a thread */ }; /* Body of every thread started via gpr_thd_new. */ static void *thread_body(void *v) { struct thd_arg a = *(struct thd_arg *)v; free(v); (*a.body)(a.arg); return NULL; } int gpr_thd_new(gpr_thd_id *t, void (*thd_body)(void *arg), void *arg, const gpr_thd_options *options) { int thread_started; pthread_attr_t attr; pthread_t p; /* don't use gpr_malloc as we may cause an infinite recursion with * the profiling code */ struct thd_arg *a = malloc(sizeof(*a)); GPR_ASSERT(a != NULL); a->body = thd_body; a->arg = arg; GPR_ASSERT(pthread_attr_init(&attr) == 0); if (gpr_thd_options_is_detached(options)) { GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) == 0); } else { GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE) == 0); } thread_started = (pthread_create(&p, &attr, &thread_body, a) == 0); GPR_ASSERT(pthread_attr_destroy(&attr) == 0); if (!thread_started) { /* don't use gpr_free, as this was allocated using malloc (see above) */ free(a); } *t = (gpr_thd_id)p; return thread_started; } gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)pthread_self(); } void gpr_thd_join(gpr_thd_id t) { pthread_join((pthread_t)t, NULL); } #endif /* GPR_POSIX_SYNC */