v8/include/v8-statistics.h

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Reland "[include] Split out v8.h" This is a reland of d1b27019d3bf86360ea838c317f8505fac6d3a7e Fixes include: Adding missing file to bazel build Forward-declaring classing before friend-classing them to fix win/gcc Add missing v8-isolate.h include for vtune builds Original change's description: > [include] Split out v8.h > > This moves every single class/function out of include/v8.h into a > separate header in include/, which v8.h then includes so that > externally nothing appears to have changed. > > Every include of v8.h from inside v8 has been changed to a more > fine-grained include. > > Previously inline functions defined at the bottom of v8.h would call > private non-inline functions in the V8 class. Since that class is now > in v8-initialization.h and is rarely included (as that would create > dependency cycles), this is not possible and so those methods have been > moved out of the V8 class into the namespace v8::api_internal. > > None of the previous files in include/ now #include v8.h, which means > if embedders were relying on this transitive dependency then it will > give compile failures. > > v8-inspector.h does depend on v8-scripts.h for the time being to ensure > that Chrome continue to compile but that change will be reverted once > those transitive #includes in chrome are changed to include it directly. > > Full design: > https://docs.google.com/document/d/1rTD--I8hCAr-Rho1WTumZzFKaDpEp0IJ8ejZtk4nJdA/edit?usp=sharing > > Bug: v8:11965 > Change-Id: I53b84b29581632710edc80eb11f819c2097a2877 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097448 > Reviewed-by: Yang Guo <yangguo@chromium.org> > Reviewed-by: Camillo Bruni <cbruni@chromium.org> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> > Reviewed-by: Leszek Swirski <leszeks@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Commit-Queue: Dan Elphick <delphick@chromium.org> > Cr-Commit-Position: refs/heads/main@{#76424} Cq-Include-Trybots: luci.v8.try:v8_linux_vtunejit Bug: v8:11965 Change-Id: I99f5d3a73bf8fe25b650adfaf9567dc4e44a09e6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3113629 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Simon Zünd <szuend@chromium.org> Commit-Queue: Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/main@{#76460}
2021-08-23 13:01:06 +00:00
// Copyright 2021 the V8 project 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 INCLUDE_V8_STATISTICS_H_
#define INCLUDE_V8_STATISTICS_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <utility>
#include <vector>
#include "v8-local-handle.h" // NOLINT(build/include_directory)
#include "v8-promise.h" // NOLINT(build/include_directory)
#include "v8config.h" // NOLINT(build/include_directory)
namespace v8 {
class Context;
class Isolate;
namespace internal {
class ReadOnlyHeap;
} // namespace internal
/**
* Controls how the default MeasureMemoryDelegate reports the result of
* the memory measurement to JS. With kSummary only the total size is reported.
* With kDetailed the result includes the size of each native context.
*/
enum class MeasureMemoryMode { kSummary, kDetailed };
/**
* Controls how promptly a memory measurement request is executed.
* By default the measurement is folded with the next scheduled GC which may
* happen after a while and is forced after some timeout.
* The kEager mode starts incremental GC right away and is useful for testing.
* The kLazy mode does not force GC.
*/
enum class MeasureMemoryExecution { kDefault, kEager, kLazy };
/**
* The delegate is used in Isolate::MeasureMemory API.
*
* It specifies the contexts that need to be measured and gets called when
* the measurement is completed to report the results.
*/
class V8_EXPORT MeasureMemoryDelegate {
public:
virtual ~MeasureMemoryDelegate() = default;
/**
* Returns true if the size of the given context needs to be measured.
*/
virtual bool ShouldMeasure(Local<Context> context) = 0;
/**
* This function is called when memory measurement finishes.
*
* \param context_sizes_in_bytes a vector of (context, size) pairs that
* includes each context for which ShouldMeasure returned true and that
* was not garbage collected while the memory measurement was in progress.
*
* \param unattributed_size_in_bytes total size of objects that were not
* attributed to any context (i.e. are likely shared objects).
*/
virtual void MeasurementComplete(
const std::vector<std::pair<Local<Context>, size_t>>&
context_sizes_in_bytes,
size_t unattributed_size_in_bytes) = 0;
/**
* Returns a default delegate that resolves the given promise when
* the memory measurement completes.
*
* \param isolate the current isolate
* \param context the current context
* \param promise_resolver the promise resolver that is given the
* result of the memory measurement.
* \param mode the detail level of the result.
*/
static std::unique_ptr<MeasureMemoryDelegate> Default(
Isolate* isolate, Local<Context> context,
Local<Promise::Resolver> promise_resolver, MeasureMemoryMode mode);
};
/**
* Collection of shared per-process V8 memory information.
*
* Instances of this class can be passed to
* v8::V8::GetSharedMemoryStatistics to get shared memory statistics from V8.
*/
class V8_EXPORT SharedMemoryStatistics {
public:
SharedMemoryStatistics();
size_t read_only_space_size() { return read_only_space_size_; }
size_t read_only_space_used_size() { return read_only_space_used_size_; }
size_t read_only_space_physical_size() {
return read_only_space_physical_size_;
}
private:
size_t read_only_space_size_;
size_t read_only_space_used_size_;
size_t read_only_space_physical_size_;
friend class V8;
friend class internal::ReadOnlyHeap;
};
/**
* Collection of V8 heap information.
*
* Instances of this class can be passed to v8::Isolate::GetHeapStatistics to
* get heap statistics from V8.
*/
class V8_EXPORT HeapStatistics {
public:
HeapStatistics();
size_t total_heap_size() { return total_heap_size_; }
size_t total_heap_size_executable() { return total_heap_size_executable_; }
size_t total_physical_size() { return total_physical_size_; }
size_t total_available_size() { return total_available_size_; }
size_t total_global_handles_size() { return total_global_handles_size_; }
size_t used_global_handles_size() { return used_global_handles_size_; }
size_t used_heap_size() { return used_heap_size_; }
size_t heap_size_limit() { return heap_size_limit_; }
size_t malloced_memory() { return malloced_memory_; }
size_t external_memory() { return external_memory_; }
size_t peak_malloced_memory() { return peak_malloced_memory_; }
size_t number_of_native_contexts() { return number_of_native_contexts_; }
size_t number_of_detached_contexts() { return number_of_detached_contexts_; }
/**
* Returns a 0/1 boolean, which signifies whether the V8 overwrite heap
* garbage with a bit pattern.
*/
size_t does_zap_garbage() { return does_zap_garbage_; }
private:
size_t total_heap_size_;
size_t total_heap_size_executable_;
size_t total_physical_size_;
size_t total_available_size_;
size_t used_heap_size_;
size_t heap_size_limit_;
size_t malloced_memory_;
size_t external_memory_;
size_t peak_malloced_memory_;
bool does_zap_garbage_;
size_t number_of_native_contexts_;
size_t number_of_detached_contexts_;
size_t total_global_handles_size_;
size_t used_global_handles_size_;
friend class V8;
friend class Isolate;
};
class V8_EXPORT HeapSpaceStatistics {
public:
HeapSpaceStatistics();
const char* space_name() { return space_name_; }
size_t space_size() { return space_size_; }
size_t space_used_size() { return space_used_size_; }
size_t space_available_size() { return space_available_size_; }
size_t physical_space_size() { return physical_space_size_; }
private:
const char* space_name_;
size_t space_size_;
size_t space_used_size_;
size_t space_available_size_;
size_t physical_space_size_;
friend class Isolate;
};
class V8_EXPORT HeapObjectStatistics {
public:
HeapObjectStatistics();
const char* object_type() { return object_type_; }
const char* object_sub_type() { return object_sub_type_; }
size_t object_count() { return object_count_; }
size_t object_size() { return object_size_; }
private:
const char* object_type_;
const char* object_sub_type_;
size_t object_count_;
size_t object_size_;
friend class Isolate;
};
class V8_EXPORT HeapCodeStatistics {
public:
HeapCodeStatistics();
size_t code_and_metadata_size() { return code_and_metadata_size_; }
size_t bytecode_and_metadata_size() { return bytecode_and_metadata_size_; }
size_t external_script_source_size() { return external_script_source_size_; }
size_t cpu_profiler_metadata_size() { return cpu_profiler_metadata_size_; }
Reland "[include] Split out v8.h" This is a reland of d1b27019d3bf86360ea838c317f8505fac6d3a7e Fixes include: Adding missing file to bazel build Forward-declaring classing before friend-classing them to fix win/gcc Add missing v8-isolate.h include for vtune builds Original change's description: > [include] Split out v8.h > > This moves every single class/function out of include/v8.h into a > separate header in include/, which v8.h then includes so that > externally nothing appears to have changed. > > Every include of v8.h from inside v8 has been changed to a more > fine-grained include. > > Previously inline functions defined at the bottom of v8.h would call > private non-inline functions in the V8 class. Since that class is now > in v8-initialization.h and is rarely included (as that would create > dependency cycles), this is not possible and so those methods have been > moved out of the V8 class into the namespace v8::api_internal. > > None of the previous files in include/ now #include v8.h, which means > if embedders were relying on this transitive dependency then it will > give compile failures. > > v8-inspector.h does depend on v8-scripts.h for the time being to ensure > that Chrome continue to compile but that change will be reverted once > those transitive #includes in chrome are changed to include it directly. > > Full design: > https://docs.google.com/document/d/1rTD--I8hCAr-Rho1WTumZzFKaDpEp0IJ8ejZtk4nJdA/edit?usp=sharing > > Bug: v8:11965 > Change-Id: I53b84b29581632710edc80eb11f819c2097a2877 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097448 > Reviewed-by: Yang Guo <yangguo@chromium.org> > Reviewed-by: Camillo Bruni <cbruni@chromium.org> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> > Reviewed-by: Leszek Swirski <leszeks@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Commit-Queue: Dan Elphick <delphick@chromium.org> > Cr-Commit-Position: refs/heads/main@{#76424} Cq-Include-Trybots: luci.v8.try:v8_linux_vtunejit Bug: v8:11965 Change-Id: I99f5d3a73bf8fe25b650adfaf9567dc4e44a09e6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3113629 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Simon Zünd <szuend@chromium.org> Commit-Queue: Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/main@{#76460}
2021-08-23 13:01:06 +00:00
private:
size_t code_and_metadata_size_;
size_t bytecode_and_metadata_size_;
size_t external_script_source_size_;
size_t cpu_profiler_metadata_size_;
Reland "[include] Split out v8.h" This is a reland of d1b27019d3bf86360ea838c317f8505fac6d3a7e Fixes include: Adding missing file to bazel build Forward-declaring classing before friend-classing them to fix win/gcc Add missing v8-isolate.h include for vtune builds Original change's description: > [include] Split out v8.h > > This moves every single class/function out of include/v8.h into a > separate header in include/, which v8.h then includes so that > externally nothing appears to have changed. > > Every include of v8.h from inside v8 has been changed to a more > fine-grained include. > > Previously inline functions defined at the bottom of v8.h would call > private non-inline functions in the V8 class. Since that class is now > in v8-initialization.h and is rarely included (as that would create > dependency cycles), this is not possible and so those methods have been > moved out of the V8 class into the namespace v8::api_internal. > > None of the previous files in include/ now #include v8.h, which means > if embedders were relying on this transitive dependency then it will > give compile failures. > > v8-inspector.h does depend on v8-scripts.h for the time being to ensure > that Chrome continue to compile but that change will be reverted once > those transitive #includes in chrome are changed to include it directly. > > Full design: > https://docs.google.com/document/d/1rTD--I8hCAr-Rho1WTumZzFKaDpEp0IJ8ejZtk4nJdA/edit?usp=sharing > > Bug: v8:11965 > Change-Id: I53b84b29581632710edc80eb11f819c2097a2877 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3097448 > Reviewed-by: Yang Guo <yangguo@chromium.org> > Reviewed-by: Camillo Bruni <cbruni@chromium.org> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> > Reviewed-by: Leszek Swirski <leszeks@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Commit-Queue: Dan Elphick <delphick@chromium.org> > Cr-Commit-Position: refs/heads/main@{#76424} Cq-Include-Trybots: luci.v8.try:v8_linux_vtunejit Bug: v8:11965 Change-Id: I99f5d3a73bf8fe25b650adfaf9567dc4e44a09e6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3113629 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Simon Zünd <szuend@chromium.org> Commit-Queue: Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/main@{#76460}
2021-08-23 13:01:06 +00:00
friend class Isolate;
};
} // namespace v8
#endif // INCLUDE_V8_STATISTICS_H_