在线文档教程
Ruby 2.4

GC::Profiler

module GC::Profiler

GC分析器提供对GC运行信息的访问,包括时间,长度和对象空间大小。

示例:

GC::Profiler.enable require 'rdoc/rdoc' GC::Profiler.report GC::Profiler.disable

另请参阅GC.count,GC.malloc_allocated_size和GC.malloc_allocations

Public Class Methods

GC::Profiler.clear → nil Show source

清除GC分析器数据。

static VALUE gc_profile_clear(void) { rb_objspace_t *objspace = &rb_objspace; if (GC_PROFILE_RECORD_DEFAULT_SIZE * 2 < objspace->profile.size) { objspace->profile.size = GC_PROFILE_RECORD_DEFAULT_SIZE * 2; objspace->profile.records = realloc(objspace->profile.records, sizeof(gc_profile_record) * objspace->profile.size if (!objspace->profile.records) { rb_memerror( } } MEMZERO(objspace->profile.records, gc_profile_record, objspace->profile.size objspace->profile.next_index = 0; objspace->profile.current_record = 0; return Qnil; }

GC::Profiler.disable → nil Show source

停止GC分析器。

static VALUE gc_profile_disable(void) { rb_objspace_t *objspace = &rb_objspace; objspace->profile.run = FALSE; objspace->profile.current_record = 0; return Qnil; }

GC::Profiler.enable → nil Show source

启动GC分析器。

static VALUE gc_profile_enable(void) { rb_objspace_t *objspace = &rb_objspace; objspace->profile.run = TRUE; objspace->profile.current_record = 0; return Qnil; }

GC::Profiler.enabled? → true or false Show source

GC配置文件模式的当前状态。

static VALUE gc_profile_enable_get(VALUE self) { rb_objspace_t *objspace = &rb_objspace; return objspace->profile.run ? Qtrue : Qfalse; }

GC::Profiler.raw_data → Hash, ...()

返回从最早到最后一个排序的各个原始配置文件数据哈希的数组:GC_INVOKE_TIME

例如:

[ { :GC_TIME=>1.3000000000000858e-05, :GC_INVOKE_TIME=>0.010634999999999999, :HEAP_USE_SIZE=>289640, :HEAP_TOTAL_SIZE=>588960, :HEAP_TOTAL_OBJECTS=>14724, :GC_IS_MARKED=>false }, # ... ]

key的意思是:

:GC_TIME

此GC运行所用的时间,以秒为单位

:GC_INVOKE_TIME

从启动到调用GC所经历的时间(以秒为单位)

:HEAP_USE_SIZE

使用堆的总字节数

:HEAP_TOTAL_SIZE

以字节为单位的堆的总大小

:HEAP_TOTAL_OBJECTS

对象的总数

:GC_IS_MARKED

如果GC处于标记阶段,则返回true

如果使用ruby构建GC_PROFILE_MORE_DETAIL,您还可以访问以下散列键:

:GC_MARK_TIME :GC_SWEEP_TIME :ALLOCATE_INCREASE :ALLOCATE_LIMIT :HEAP_USE_PAGES :HEAP_LIVE_OBJECTS :HEAP_FREE_OBJECTS :HAVE_FINALIZE

static VALUE gc_profile_record_get(void) { VALUE prof; VALUE gc_profile = rb_ary_new( size_t i; rb_objspace_t *objspace = (&rb_objspace if (!objspace->profile.run) { return Qnil; } for (i =0; i < objspace->profile.next_index; i++) { gc_profile_record *record = &objspace->profile.records[i]; prof = rb_hash_new( rb_hash_aset(prof, ID2SYM(rb_intern("GC_FLAGS")), gc_info_decode(0, rb_hash_new(), record->flags) rb_hash_aset(prof, ID2SYM(rb_intern("GC_TIME")), DBL2NUM(record->gc_time) rb_hash_aset(prof, ID2SYM(rb_intern("GC_INVOKE_TIME")), DBL2NUM(record->gc_invoke_time) rb_hash_aset(prof, ID2SYM(rb_intern("HEAP_USE_SIZE")), SIZET2NUM(record->heap_use_size) rb_hash_aset(prof, ID2SYM(rb_intern("HEAP_TOTAL_SIZE")), SIZET2NUM(record->heap_total_size) rb_hash_aset(prof, ID2SYM(rb_intern("HEAP_TOTAL_OBJECTS")), SIZET2NUM(record->heap_total_objects) rb_hash_aset(prof, ID2SYM(rb_intern("GC_IS_MARKED")), Qtrue #if GC_PROFILE_MORE_DETAIL rb_hash_aset(prof, ID2SYM(rb_intern("GC_MARK_TIME")), DBL2NUM(record->gc_mark_time) rb_hash_aset(prof, ID2SYM(rb_intern("GC_SWEEP_TIME")), DBL2NUM(record->gc_sweep_time) rb_hash_aset(prof, ID2SYM(rb_intern("ALLOCATE_INCREASE")), SIZET2NUM(record->allocate_increase) rb_hash_aset(prof, ID2SYM(rb_intern("ALLOCATE_LIMIT")), SIZET2NUM(record->allocate_limit) rb_hash_aset(prof, ID2SYM(rb_intern("HEAP_USE_PAGES")), SIZET2NUM(record->heap_use_pages) rb_hash_aset(prof, ID2SYM(rb_intern("HEAP_LIVE_OBJECTS")), SIZET2NUM(record->heap_live_objects) rb_hash_aset(prof, ID2SYM(rb_intern("HEAP_FREE_OBJECTS")), SIZET2NUM(record->heap_free_objects) rb_hash_aset(prof, ID2SYM(rb_intern("REMOVING_OBJECTS")), SIZET2NUM(record->removing_objects) rb_hash_aset(prof, ID2SYM(rb_intern("EMPTY_OBJECTS")), SIZET2NUM(record->empty_objects) rb_hash_aset(prof, ID2SYM(rb_intern("HAVE_FINALIZE")), (record->flags & GPR_FLAG_HAVE_FINALIZE) ? Qtrue : Qfalse #endif #if RGENGC_PROFILE > 0 rb_hash_aset(prof, ID2SYM(rb_intern("OLD_OBJECTS")), SIZET2NUM(record->old_objects) rb_hash_aset(prof, ID2SYM(rb_intern("REMEMBERED_NORMAL_OBJECTS")), SIZET2NUM(record->remembered_normal_objects) rb_hash_aset(prof, ID2SYM(rb_intern("REMEMBERED_SHADY_OBJECTS")), SIZET2NUM(record->remembered_shady_objects) #endif rb_ary_push(gc_profile, prof } return gc_profile; }

GC::Profiler.report Show source

GC::Profiler.report(io)

将:: result写入$stdout给定的IO对象。

static VALUE gc_profile_report(int argc, VALUE *argv, VALUE self) { VALUE out; if (argc == 0) { out = rb_stdout; } else { rb_scan_args(argc, argv, "01", &out } gc_profile_dump_on(out, rb_io_write return Qnil; }

GC::Profiler.result → String Show source

返回配置文件数据报告,例如:

GC 1 invokes. Index Invoke Time(sec) Use Size(byte) Total Size(byte) Total Object GC time(ms) 1 0.012 159240 212940 10647 0.00000000000001530000

static VALUE gc_profile_result(void) { VALUE str = rb_str_buf_new(0 gc_profile_dump_on(str, rb_str_buf_append return str; }

GC::Profiler.total_time → float Show source

在几秒钟内用于垃圾收集的总时间

static VALUE gc_profile_total_time(VALUE self) { double time = 0; rb_objspace_t *objspace = &rb_objspace; if (objspace->profile.run && objspace->profile.next_index > 0) { size_t i; size_t count = objspace->profile.next_index; for (i = 0; i < count; i++) { time += objspace->profile.records[i].gc_time; } } return DBL2NUM(time }