Add m-esr52 at 52.6.0

1 files changed, 431 insertions, 0 deletions

diff --git a/tools/profiler/core/platform.h b/tools/profiler/core/platform.h
new file mode 100644
index 000000000..2e736d97c
--- /dev/null
+++ b/tools/profiler/core/platform.h
@@ -0,0 +1,431 @@
+// Copyright (c) 2006-2011 The Chromium Authors. 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.
+
+#ifndef TOOLS_PLATFORM_H_
+#define TOOLS_PLATFORM_H_
+
+#ifdef SPS_STANDALONE
+#define MOZ_COUNT_CTOR(name)
+#define MOZ_COUNT_DTOR(name)
+#endif
+
+#ifdef ANDROID
+#include <android/log.h>
+#else
+#define __android_log_print(a, ...)
+#endif
+
+#ifdef XP_UNIX
+#include <pthread.h>
+#endif
+
+#include <stdint.h>
+#include <math.h>
+#ifndef SPS_STANDALONE
+#include "MainThreadUtils.h"
+#include "mozilla/Mutex.h"
+#include "ThreadResponsiveness.h"
+#endif
+#include "mozilla/TimeStamp.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "PlatformMacros.h"
+#include "v8-support.h"
+#include <vector>
+#include "StackTop.h"
+
+// We need a definition of gettid(), but Linux libc implementations don't
+// provide a wrapper for it (except for Bionic)
+#if defined(__linux__)
+#include <unistd.h>
+#if !defined(__BIONIC__)
+#include <sys/syscall.h>
+static inline pid_t gettid()
+{
+  return (pid_t) syscall(SYS_gettid);
+}
+#endif
+#endif
+
+#ifdef XP_WIN
+#include <windows.h>
+#endif
+
+#define ASSERT(a) MOZ_ASSERT(a)
+
+bool moz_profiler_verbose();
+
+#ifdef ANDROID
+# if defined(__arm__) || defined(__thumb__)
+#  define ENABLE_SPS_LEAF_DATA
+#  define ENABLE_ARM_LR_SAVING
+# endif
+# define LOG(text) \
+    do { if (moz_profiler_verbose()) \
+           __android_log_write(ANDROID_LOG_ERROR, "Profiler", text); \
+    } while (0)
+# define LOGF(format, ...) \
+    do { if (moz_profiler_verbose()) \
+           __android_log_print(ANDROID_LOG_ERROR, "Profiler", format, \
+                               __VA_ARGS__); \
+    } while (0)
+
+#else
+# define LOG(text) \
+    do { if (moz_profiler_verbose()) fprintf(stderr, "Profiler: %s\n", text); \
+    } while (0)
+# define LOGF(format, ...) \
+    do { if (moz_profiler_verbose()) fprintf(stderr, "Profiler: " format \
+                                             "\n", __VA_ARGS__);        \
+    } while (0)
+
+#endif
+
+#if defined(XP_MACOSX) || defined(XP_WIN) || defined(XP_LINUX)
+#define ENABLE_SPS_LEAF_DATA
+#endif
+
+typedef int32_t Atomic32;
+
+extern mozilla::TimeStamp sStartTime;
+
+typedef uint8_t* Address;
+
+// ----------------------------------------------------------------------------
+// Mutex
+//
+// Mutexes are used for serializing access to non-reentrant sections of code.
+// The implementations of mutex should allow for nested/recursive locking.
+
+class Mutex {
+ public:
+  virtual ~Mutex() {}
+
+  // Locks the given mutex. If the mutex is currently unlocked, it becomes
+  // locked and owned by the calling thread, and immediately. If the mutex
+  // is already locked by another thread, suspends the calling thread until
+  // the mutex is unlocked.
+  virtual int Lock() = 0;
+
+  // Unlocks the given mutex. The mutex is assumed to be locked and owned by
+  // the calling thread on entrance.
+  virtual int Unlock() = 0;
+};
+
+class MutexAutoLock {
+ public:
+  explicit MutexAutoLock(::Mutex& aMutex)
+    : mMutex(&aMutex)
+  {
+    mMutex->Lock();
+  }
+
+  ~MutexAutoLock() {
+    mMutex->Unlock();
+  }
+
+ private:
+  Mutex* mMutex;
+};
+
+// ----------------------------------------------------------------------------
+// OS
+//
+// This class has static methods for the different platform specific
+// functions. Add methods here to cope with differences between the
+// supported platforms.
+
+class OS {
+ public:
+
+  // Sleep for a number of milliseconds.
+  static void Sleep(const int milliseconds);
+
+  // Sleep for a number of microseconds.
+  static void SleepMicro(const int microseconds);
+
+  // Called on startup to initialize platform specific things
+  static void Startup();
+
+  static mozilla::UniquePtr< ::Mutex> CreateMutex(const char* aDesc);
+
+ private:
+  static const int msPerSecond = 1000;
+
+};
+
+
+
+
+// ----------------------------------------------------------------------------
+// Thread
+//
+// Thread objects are used for creating and running threads. When the start()
+// method is called the new thread starts running the run() method in the new
+// thread. The Thread object should not be deallocated before the thread has
+// terminated.
+
+class Thread {
+ public:
+  // Create new thread.
+  explicit Thread(const char* name);
+  virtual ~Thread();
+
+  // Start new thread by calling the Run() method in the new thread.
+  void Start();
+
+  void Join();
+
+  inline const char* name() const {
+    return name_;
+  }
+
+  // Abstract method for run handler.
+  virtual void Run() = 0;
+
+  // The thread name length is limited to 16 based on Linux's implementation of
+  // prctl().
+  static const int kMaxThreadNameLength = 16;
+
+#ifdef XP_WIN
+  HANDLE thread_;
+  typedef DWORD tid_t;
+  tid_t thread_id_;
+#else
+  typedef ::pid_t tid_t;
+#endif
+#if defined(XP_MACOSX)
+  pthread_t thread_;
+#endif
+
+  static tid_t GetCurrentId();
+
+ private:
+  void set_name(const char *name);
+
+  char name_[kMaxThreadNameLength];
+  int stack_size_;
+
+  DISALLOW_COPY_AND_ASSIGN(Thread);
+};
+
+// ----------------------------------------------------------------------------
+// HAVE_NATIVE_UNWIND
+//
+// Pseudo backtraces are available on all platforms.  Native
+// backtraces are available only on selected platforms.  Breakpad is
+// the only supported native unwinder.  HAVE_NATIVE_UNWIND is set at
+// build time to indicate whether native unwinding is possible on this
+// platform.
+
+#undef HAVE_NATIVE_UNWIND
+#if defined(MOZ_PROFILING) \
+    && (defined(SPS_PLAT_amd64_linux) || defined(SPS_PLAT_arm_android) \
+        || (defined(MOZ_WIDGET_ANDROID) && defined(__arm__)) \
+        || defined(SPS_PLAT_x86_linux) \
+        || defined(SPS_OS_windows) \
+        || defined(SPS_OS_darwin))
+# define HAVE_NATIVE_UNWIND
+#endif
+
+/* Some values extracted at startup from environment variables, that
+   control the behaviour of the breakpad unwinder. */
+extern const char* PROFILER_INTERVAL;
+extern const char* PROFILER_ENTRIES;
+extern const char* PROFILER_STACK;
+extern const char* PROFILER_FEATURES;
+
+void read_profiler_env_vars();
+void profiler_usage();
+
+// Helper methods to expose modifying profiler behavior
+bool set_profiler_interval(const char*);
+bool set_profiler_entries(const char*);
+bool set_profiler_scan(const char*);
+bool is_native_unwinding_avail();
+
+void set_tls_stack_top(void* stackTop);
+
+// ----------------------------------------------------------------------------
+// Sampler
+//
+// A sampler periodically samples the state of the VM and optionally
+// (if used for profiling) the program counter and stack pointer for
+// the thread that created it.
+
+struct PseudoStack;
+class ThreadProfile;
+
+// TickSample captures the information collected for each sample.
+class TickSample {
+ public:
+  TickSample()
+      : pc(NULL)
+      , sp(NULL)
+      , fp(NULL)
+#ifdef ENABLE_ARM_LR_SAVING
+      , lr(NULL)
+#endif
+      , context(NULL)
+      , isSamplingCurrentThread(false)
+      , threadProfile(nullptr)
+      , rssMemory(0)
+      , ussMemory(0)
+  {}
+
+  void PopulateContext(void* aContext);
+
+  Address pc;  // Instruction pointer.
+  Address sp;  // Stack pointer.
+  Address fp;  // Frame pointer.
+#ifdef ENABLE_ARM_LR_SAVING
+  Address lr;  // ARM link register
+#endif
+  void*   context;   // The context from the signal handler, if available. On
+                     // Win32 this may contain the windows thread context.
+  bool    isSamplingCurrentThread;
+  ThreadProfile* threadProfile;
+  mozilla::TimeStamp timestamp;
+  int64_t rssMemory;
+  int64_t ussMemory;
+};
+
+class ThreadInfo;
+class PlatformData;
+class GeckoSampler;
+class SyncProfile;
+class Sampler {
+ public:
+  // Initialize sampler.
+  explicit Sampler(double interval, bool profiling, int entrySize);
+  virtual ~Sampler();
+
+  double interval() const { return interval_; }
+
+  // This method is called for each sampling period with the current
+  // program counter.
+  virtual void Tick(TickSample* sample) = 0;
+
+  // Immediately captures the calling thread's call stack and returns it.
+  virtual SyncProfile* GetBacktrace() = 0;
+
+  // Request a save from a signal handler
+  virtual void RequestSave() = 0;
+  // Process any outstanding request outside a signal handler.
+  virtual void HandleSaveRequest() = 0;
+  // Delete markers which are no longer part of the profile due to buffer wraparound.
+  virtual void DeleteExpiredMarkers() = 0;
+
+  // Start and stop sampler.
+  void Start();
+  void Stop();
+
+  // Is the sampler used for profiling?
+  bool IsProfiling() const { return profiling_; }
+
+  // Whether the sampler is running (that is, consumes resources).
+  bool IsActive() const { return active_; }
+
+  // Low overhead way to stop the sampler from ticking
+  bool IsPaused() const { return paused_; }
+  void SetPaused(bool value) { NoBarrier_Store(&paused_, value); }
+
+  virtual bool ProfileThreads() const = 0;
+
+  int EntrySize() { return entrySize_; }
+
+  // We can't new/delete the type safely without defining it
+  // (-Wdelete-incomplete). Use these Alloc/Free functions instead.
+  static PlatformData* AllocPlatformData(int aThreadId);
+  static void FreePlatformData(PlatformData*);
+
+  // If we move the backtracing code into the platform files we won't
+  // need to have these hacks
+#ifdef XP_WIN
+  // xxxehsan sucky hack :(
+  static uintptr_t GetThreadHandle(PlatformData*);
+#endif
+#ifdef XP_MACOSX
+  static pthread_t GetProfiledThread(PlatformData*);
+#endif
+
+  static std::vector<ThreadInfo*> GetRegisteredThreads() {
+    return *sRegisteredThreads;
+  }
+
+  static bool RegisterCurrentThread(const char* aName,
+                                    PseudoStack* aPseudoStack,
+                                    bool aIsMainThread, void* stackTop);
+  static void UnregisterCurrentThread();
+
+  static void Startup();
+  // Should only be called on shutdown
+  static void Shutdown();
+
+  static GeckoSampler* GetActiveSampler() { return sActiveSampler; }
+  static void SetActiveSampler(GeckoSampler* sampler) { sActiveSampler = sampler; }
+
+  static mozilla::UniquePtr<Mutex> sRegisteredThreadsMutex;
+
+  static bool CanNotifyObservers() {
+#ifdef MOZ_WIDGET_GONK
+    // We use profile.sh on b2g to manually select threads and options per process.
+    return false;
+#elif defined(SPS_OS_android) && !defined(MOZ_WIDGET_GONK)
+    // Android ANR reporter uses the profiler off the main thread
+    return NS_IsMainThread();
+#else
+    MOZ_ASSERT(NS_IsMainThread());
+    return true;
+#endif
+  }
+
+ protected:
+  static std::vector<ThreadInfo*>* sRegisteredThreads;
+  static GeckoSampler* sActiveSampler;
+
+ private:
+  void SetActive(bool value) { NoBarrier_Store(&active_, value); }
+
+  const double interval_;
+  const bool profiling_;
+  Atomic32 paused_;
+  Atomic32 active_;
+  const int entrySize_;
+
+  // Refactor me!
+#if defined(SPS_OS_linux) || defined(SPS_OS_android)
+  bool signal_handler_installed_;
+  struct sigaction old_sigprof_signal_handler_;
+  struct sigaction old_sigsave_signal_handler_;
+  bool signal_sender_launched_;
+  pthread_t signal_sender_thread_;
+#endif
+};
+
+#endif /* ndef TOOLS_PLATFORM_H_ */