[V8] Implement OS::SetUp() and OS::TearDown() for QNX

This is needed to not have unresolved symbols following a V8 version
bump.

Change-Id: I6f98573c08cdb803f691678d3986a2ed87038cdb
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 37 insertions, 28 deletions

diff --git a/src/3rdparty/v8/src/platform-qnx.cc b/src/3rdparty/v8/src/platform-qnx.cc
index 92e4d6c..cb06510 100644
--- a/src/3rdparty/v8/src/platform-qnx.cc
+++ b/src/3rdparty/v8/src/platform-qnx.cc
@@ -78,33 +78,6 @@ double ceiling(double x) {
 static Mutex* limit_mutex = NULL;
 
 
-void OS::SetUp() {
-  // Seed the random number generator. We preserve microsecond resolution.
-  uint64_t seed = Ticks() ^ (getpid() << 16);
-  srandom(static_cast<unsigned int>(seed));
-  limit_mutex = CreateMutex();
-
-#ifdef __arm__
-  // When running on ARM hardware check that the EABI used by V8 and
-  // by the C code is the same.
-  bool hard_float = OS::ArmUsingHardFloat();
-  if (hard_float) {
-#if !USE_EABI_HARDFLOAT
-    PrintF("ERROR: Binary compiled with -mfloat-abi=hard but without "
-           "-DUSE_EABI_HARDFLOAT\n");
-    exit(1);
-#endif
-  } else {
-#if USE_EABI_HARDFLOAT
-    PrintF("ERROR: Binary not compiled with -mfloat-abi=hard but with "
-           "-DUSE_EABI_HARDFLOAT\n");
-    exit(1);
-#endif
-  }
-#endif
-}
-
-
 void OS::PostSetUp() {
   POSIXPostSetUp();
 }
@@ -906,6 +879,9 @@ class SignalSender : public Thread {
         vm_tgid_(getpid()),
         interval_(interval) {}
 
+  static void SetUp() { if (!mutex_) mutex_ = OS::CreateMutex(); }
+  static void TearDown() { delete mutex_; }
+
   static void InstallSignalHandler() {
     struct sigaction sa;
     sa.sa_sigaction = ProfilerSignalHandler;
@@ -1039,12 +1015,45 @@ class SignalSender : public Thread {
 };
 
 
-Mutex* SignalSender::mutex_ = OS::CreateMutex();
+Mutex* SignalSender::mutex_ = NULL;
 SignalSender* SignalSender::instance_ = NULL;
 struct sigaction SignalSender::old_signal_handler_;
 bool SignalSender::signal_handler_installed_ = false;
 
 
+void OS::SetUp() {
+  // Seed the random number generator. We preserve microsecond resolution.
+  uint64_t seed = Ticks() ^ (getpid() << 16);
+  srandom(static_cast<unsigned int>(seed));
+  limit_mutex = CreateMutex();
+
+#ifdef __arm__
+  // When running on ARM hardware check that the EABI used by V8 and
+  // by the C code is the same.
+  bool hard_float = OS::ArmUsingHardFloat();
+  if (hard_float) {
+#if !USE_EABI_HARDFLOAT
+    PrintF("ERROR: Binary compiled with -mfloat-abi=hard but without "
+           "-DUSE_EABI_HARDFLOAT\n");
+    exit(1);
+#endif
+  } else {
+#if USE_EABI_HARDFLOAT
+    PrintF("ERROR: Binary not compiled with -mfloat-abi=hard but with "
+           "-DUSE_EABI_HARDFLOAT\n");
+    exit(1);
+#endif
+  }
+#endif
+}
+
+
+void OS::TearDown() {
+  SignalSender::TearDown();
+  delete limit_mutex;
+}
+
+
 Sampler::Sampler(Isolate* isolate, int interval)
     : isolate_(isolate),
       interval_(interval),