1 /* 2 * Copyright (c) 2012 The Chromium Authors. All rights reserved. 3 * Use of this source code is governed by a BSD-style license that can be 4 * found in the LICENSE file. 5 */ 6 7 #include "ppapi/native_client/src/untrusted/irt_stub/thread_creator.h" 8 9 #include <pthread.h> 10 11 #include "native_client/src/include/nacl_macros.h" 12 #include "native_client/src/untrusted/irt/irt.h" 13 14 15 static int thread_create(uintptr_t *tid, 16 void (*func)(void *thread_argument), 17 void *thread_argument) { 18 /* 19 * We know that newlib and glibc use a small pthread_t type, so we 20 * do not need to wrap pthread_t values. 21 */ 22 NACL_ASSERT_SAME_SIZE(pthread_t, uintptr_t); 23 24 return pthread_create((pthread_t *) tid, NULL, 25 (void *(*)(void *thread_argument)) func, 26 thread_argument); 27 } 28 29 static int thread_join(uintptr_t tid) { 30 return pthread_join((pthread_t) tid, NULL); 31 } 32 33 const static struct PP_ThreadFunctions thread_funcs = { 34 thread_create, 35 thread_join 36 }; 37 38 /* 39 * We cannot tell at link time whether the application uses PPB_Audio, 40 * because of the way that PPAPI is defined via runtime interface 41 * query rather than a set of static functions. This means that we 42 * register the audio thread functions unconditionally. This adds the 43 * small overhead of pulling in pthread_create() even if the 44 * application does not use PPB_Audio or libpthread. 45 * 46 * If an application developer wants to avoid that cost, they can 47 * override this function with an empty definition. 48 */ 49 void __nacl_register_thread_creator(const struct nacl_irt_ppapihook *hooks) { 50 hooks->ppapi_register_thread_creator(&thread_funcs); 51 } 52
