Move base to DEPS

base/debug/profiler.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_DEBUG_PROFILER_H_
-#define BASE_DEBUG_PROFILER_H_
-
-#include <string>
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-
-// The Profiler functions allow usage of the underlying sampling based
-// profiler. If the application has not been built with the necessary
-// flags (-DENABLE_PROFILING and not -DNO_TCMALLOC) then these functions
-// are noops.
-namespace base {
-namespace debug {
-
-// Start profiling with the supplied name.
-// {pid} will be replaced by the process' pid and {count} will be replaced
-// by the count of the profile run (starts at 1 with each process).
-BASE_EXPORT void StartProfiling(const std::string& name);
-
-// Stop profiling and write out data.
-BASE_EXPORT void StopProfiling();
-
-// Force data to be written to file.
-BASE_EXPORT void FlushProfiling();
-
-// Returns true if process is being profiled.
-BASE_EXPORT bool BeingProfiled();
-
-// Reset profiling after a fork, which disables timers.
-BASE_EXPORT void RestartProfilingAfterFork();
-
-// Returns true iff this executable is instrumented with the Syzygy profiler.
-BASE_EXPORT bool IsBinaryInstrumented();
-
-// There's a class of profilers that use "return address swizzling" to get a
-// hook on function exits. This class of profilers uses some form of entry hook,
-// like e.g. binary instrumentation, or a compiler flag, that calls a hook each
-// time a function is invoked. The hook then switches the return address on the
-// stack for the address of an exit hook function, and pushes the original
-// return address to a shadow stack of some type. When in due course the CPU
-// executes a return to the exit hook, the exit hook will do whatever work it
-// does on function exit, then arrange to return to the original return address.
-// This class of profiler does not play well with programs that look at the
-// return address, as does e.g. V8. V8 uses the return address to certain
-// runtime functions to find the JIT code that called it, and from there finds
-// the V8 data structures associated to the JS function involved.
-// A return address resolution function is used to fix this. It allows such
-// programs to resolve a location on stack where a return address originally
-// resided, to the shadow stack location where the profiler stashed it.
-typedef uintptr_t (*ReturnAddressLocationResolver)(
-    uintptr_t return_addr_location);
-
-// This type declaration must match V8's FunctionEntryHook.
-typedef void (*DynamicFunctionEntryHook)(uintptr_t function,
-                                         uintptr_t return_addr_location);
-
-// The functions below here are to support profiling V8-generated code.
-// V8 has provisions for generating a call to an entry hook for newly generated
-// JIT code, and it can push symbol information on code generation and advise
-// when the garbage collector moves code. The functions declarations below here
-// make glue between V8's facilities and a profiler.
-
-// This type declaration must match V8's FunctionEntryHook.
-typedef void (*DynamicFunctionEntryHook)(uintptr_t function,
-                                         uintptr_t return_addr_location);
-
-typedef void (*AddDynamicSymbol)(const void* address,
-                                 size_t length,
-                                 const char* name,
-                                 size_t name_len);
-typedef void (*MoveDynamicSymbol)(const void* address, const void* new_address);
-
-
-// If this binary is instrumented and the instrumentation supplies a function
-// for each of those purposes, find and return the function in question.
-// Otherwise returns NULL.
-BASE_EXPORT ReturnAddressLocationResolver GetProfilerReturnAddrResolutionFunc();
-BASE_EXPORT DynamicFunctionEntryHook GetProfilerDynamicFunctionEntryHookFunc();
-BASE_EXPORT AddDynamicSymbol GetProfilerAddDynamicSymbolFunc();
-BASE_EXPORT MoveDynamicSymbol GetProfilerMoveDynamicSymbolFunc();
-
-}  // namespace debug
-}  // namespace base
-
-#endif  // BASE_DEBUG_PROFILER_H_