mozglue/build/BionicGlue.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   4  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include <sys/types.h>
   7 #include <unistd.h>
   8 #include <sys/syscall.h>
   9
  10 #define NS_EXPORT __attribute__((visibility("default")))
  11
  12 extern "C" NS_EXPORT int raise(int sig) {
  13   // Bug 741272: Bionic incorrectly uses kill(), which signals the
  14   // process, and thus could signal another thread (and let this one
  15   // return "successfully" from raising a fatal signal).
  16   //
  17   // Bug 943170: POSIX specifies pthread_kill(pthread_self(), sig) as
  18   // equivalent to raise(sig), but Bionic also has a bug with these
  19   // functions, where a forked child will kill its parent instead.
  20
  21   extern pid_t gettid(void);
  22   return syscall(__NR_tgkill, getpid(), gettid(), sig);
  23 }
  24
  25 /* Flash plugin uses symbols that are not present in Android >= 4.4 */
  26 namespace android {
  27 namespace VectorImpl {
  28 NS_EXPORT void reservedVectorImpl1(void) {}
  29 NS_EXPORT void reservedVectorImpl2(void) {}
  30 NS_EXPORT void reservedVectorImpl3(void) {}
  31 NS_EXPORT void reservedVectorImpl4(void) {}
  32 NS_EXPORT void reservedVectorImpl5(void) {}
  33 NS_EXPORT void reservedVectorImpl6(void) {}
  34 NS_EXPORT void reservedVectorImpl7(void) {}
  35 NS_EXPORT void reservedVectorImpl8(void) {}
  36 }  // namespace VectorImpl
  37 }  // namespace android