зеркало из https://github.com/mozilla/pjs.git
223 строки
8.0 KiB
C
223 строки
8.0 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is tmreader.h/tmreader.c code, released
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* July 7, 2000.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brendan Eich, 7-July-2000
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef tmreader_h___
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#define tmreader_h___
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#include "prtypes.h"
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#include "plhash.h"
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#include "nsTraceMalloc.h"
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#include "plarena.h"
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PR_BEGIN_EXTERN_C
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typedef struct tmreader tmreader;
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typedef struct tmevent tmevent;
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typedef struct tmcounts tmcounts;
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typedef struct tmallcounts tmallcounts;
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typedef struct tmgraphlink tmgraphlink;
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typedef struct tmgraphedge tmgraphedge;
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typedef struct tmgraphnode tmgraphnode;
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typedef struct tmcallsite tmcallsite;
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typedef struct tmmethodnode tmmethodnode;
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struct tmevent {
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char type;
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uint32 serial;
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union {
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char *libname;
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char *srcname;
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struct {
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uint32 library;
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uint32 filename;
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uint32 linenumber;
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char *name;
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} method;
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struct {
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uint32 parent;
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uint32 method;
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uint32 offset;
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} site;
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struct {
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uint32 interval; /* in ticks */
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uint32 ptr;
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uint32 size;
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uint32 oldserial;
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uint32 oldptr;
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uint32 oldsize;
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uint32 cost; /* in ticks */
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} alloc;
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struct {
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nsTMStats tmstats;
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uint32 calltree_maxkids_parent;
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uint32 calltree_maxstack_top;
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} stats;
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} u;
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};
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struct tmcounts {
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uint32 direct; /* things allocated by this node's code */
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uint32 total; /* direct + things from all descendents */
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};
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struct tmallcounts {
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tmcounts bytes;
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tmcounts calls;
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};
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struct tmgraphnode {
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PLHashEntry entry; /* key is serial or name, value must be name */
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tmgraphlink *in;
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tmgraphlink *out;
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tmgraphnode *up; /* parent in supergraph, e.g., JS for JS_*() */
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tmgraphnode *down; /* subgraph kids, declining bytes.total order */
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tmgraphnode *next; /* next kid in supergraph node's down list */
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int low; /* 0 or lowest current tree walk level */
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tmallcounts allocs;
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tmallcounts frees;
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double sqsum; /* sum of squared bytes.direct */
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int sort; /* sorted index in node table, -1 if no table */
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};
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struct tmmethodnode {
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tmgraphnode graphnode;
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char *sourcefile;
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uint32 linenumber;
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};
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#define tmgraphnode_name(node) ((char*) (node)->entry.value)
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#define tmmethodnode_name(node) ((char*) (node)->graphnode.entry.value)
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#define tmlibrary_serial(lib) ((uint32) (lib)->entry.key)
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#define tmcomponent_name(comp) ((const char*) (comp)->entry.key)
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#define filename_name(hashentry) ((char*)hashentry->value)
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/* Half a graphedge, not including per-edge allocation stats. */
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struct tmgraphlink {
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tmgraphlink *next; /* next fanning out from or into a node */
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tmgraphnode *node; /* the other node (to if OUT, from if IN) */
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};
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/*
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* It's safe to downcast a "from" tmgraphlink (one linked from a node's out
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* pointer) to tmgraphedge. To go from an "out" (linked via tmgraphedge.from)
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* or "in" (linked via tmgraphedge.to) list link to its containing edge, use
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* TM_LINK_TO_EDGE(link, which).
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*/
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struct tmgraphedge {
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tmgraphlink links[2];
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tmallcounts allocs;
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tmallcounts frees;
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};
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/* Indices into tmgraphedge.links -- out must come first. */
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#define TM_EDGE_OUT_LINK 0
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#define TM_EDGE_IN_LINK 1
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#define TM_LINK_TO_EDGE(link,which) ((tmgraphedge*) &(link)[-(which)])
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struct tmcallsite {
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PLHashEntry entry; /* key is site serial number */
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tmcallsite *parent; /* calling site */
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tmcallsite *siblings; /* other sites reached from parent */
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tmcallsite *kids; /* sites reached from here */
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tmmethodnode *method; /* method node in tmr->methods graph */
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uint32 offset; /* pc offset from start of method */
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tmallcounts allocs;
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tmallcounts frees;
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void *data; /* tmreader clients can stick arbitrary
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* data onto a callsite.
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*/
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};
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struct tmreader {
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const char *program;
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void *data;
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PLHashTable *libraries;
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PLHashTable *filenames;
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PLHashTable *components;
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PLHashTable *methods;
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PLHashTable *callsites;
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PLArenaPool arena;
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tmcallsite calltree_root;
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uint32 ticksPerSec;
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};
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typedef void (*tmeventhandler)(tmreader *tmr, tmevent *event);
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/* The tmreader constructor and destructor. */
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extern tmreader *tmreader_new(const char *program, void *data);
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extern void tmreader_destroy(tmreader *tmr);
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/*
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* Return -1 on permanent fatal error, 0 if filename can't be opened or is not
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* a trace-malloc logfile, and 1 on success.
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*/
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extern int tmreader_eventloop(tmreader *tmr, const char *filename,
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tmeventhandler eventhandler);
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/* Map serial number or name to graphnode or callsite. */
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extern tmgraphnode *tmreader_library(tmreader *tmr, uint32 serial);
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extern tmgraphnode *tmreader_filename(tmreader *tmr, uint32 serial);
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extern tmgraphnode *tmreader_component(tmreader *tmr, const char *name);
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extern tmmethodnode *tmreader_method(tmreader *tmr, uint32 serial);
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extern tmcallsite *tmreader_callsite(tmreader *tmr, uint32 serial);
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/*
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* Connect node 'from' to node 'to' with an edge, if there isn't one already
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* connecting the nodes. Add site's allocation stats to the edge only if we
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* create the edge, or if we find that it exists, but that to->low is zero or
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* less than from->low.
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*
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* If the callsite tree already totals allocation costs (tmcounts.total for
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* each site includes tmcounts.direct for that site, plus tmcounts.total for
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* all kid sites), then the node->low watermarks should be set from the tree
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* level when walking the callsite tree, and should be set to non-zero values
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* only if zero (the root is at level 0). A low watermark should be cleared
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* when the tree walk unwinds past the level at which it was set non-zero.
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*
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* Return 0 on error (malloc failure) and 1 on success.
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*/
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extern int tmgraphnode_connect(tmgraphnode *from, tmgraphnode *to,
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tmcallsite *site);
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PR_END_EXTERN_C
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#endif /* tmreader_h___ */
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