tools/trace-malloc/spacetrace.h
author Benoit Jacob <bjacob@mozilla.com>
Sun, 04 Dec 2011 14:15:43 -0500
changeset 81418 432d88a73914212f73ebf3fef49925e00aea1b78
parent 1 9b2a99adc05e53cd4010de512f50118594756650
child 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 707033 - Kill the hashtables of WebGLUniformLocation's held by WebGLProgram's - r=jgilbert Currently, WebGLProgram holds a hashtable of refptrs to all WebGLUniformLocation's created from it. It's used for one thing: to ensure that multiple getUniformLocation() calls on same uniform return the same WebGLUniformLocation object. However, in a discussion on the public_webgl mailing list this week, we agreed that this was not mandated by the spec and that on the contrary, to ensure consistent behavior across browsers, we're going to require that NOT to happen. So this becomes a conformance issue. Removing this hashtable also simplifies code and ownership patterns.

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is spacetrace.h/spacetrace.c code, released
 * Nov 6, 2001.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Garrett Arch Blythe, 31-October-2001
 *   Suresh Duddi <dp@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef spacetrace_h__
#define spacetrace_h__

/*
** spacetrace.h
**
** SpaceTrace is meant to take the output of trace-malloc and present
**   a picture of allocations over the run of the application.
*/

/*
** Required includes.
*/
#include "nspr.h"
#include "prlock.h"
#include "prrwlock.h"
#include "nsTraceMalloc.h"
#include "tmreader.h"
#include "formdata.h"

/*
** Turn on to attempt adding support for graphs on your platform.
*/
#if defined(HAVE_BOUTELL_GD)
#define ST_WANT_GRAPHS 1
#endif /* HAVE_BOUTELL_GD */
#if !defined(ST_WANT_GRAPHS)
#define ST_WANT_GRAPHS 0
#endif

/*
** REPORT_ERROR
** REPORT_INFO
**
** Just report errors and stuff in a consistent manner.
*/
#define REPORT_ERROR(code, function) \
        PR_fprintf(PR_STDERR, "error(%d):\t%s\n", code, #function)
#define REPORT_ERROR_MSG(code, msg) \
        PR_fprintf(PR_STDERR, "error(%d):\t%s\n", code, msg)
#define REPORT_INFO(msg) \
        PR_fprintf(PR_STDOUT, "%s: %s\n", globals.mProgramName, (msg))

#if defined(DEBUG_blythe) && 1
#define REPORT_blythe(code, msg) \
        PR_fprintf(PR_STDOUT, "gab(%d):\t%s\n", code, msg)
#else
#define REPORT_blythe(code, msg)
#endif /* DEBUG_blythe */

/*
** CALLSITE_RUN
**
** How to get a callsite run.
** Allows for further indirection if needed later.
*/
#define CALLSITE_RUN(callsite) \
        ((STRun*)((callsite)->data))

/*
** ST_PERMS
** ST_FLAGS
**
** File permissions we desire.
** 0644
*/
#define ST_PERMS (PR_IRUSR | PR_IWUSR | PR_IRGRP | PR_IROTH)
#define ST_FLAGS (PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE) 

/*
** Sorting order
*/
#define ST_WEIGHT   0 /* size * timeval */
#define ST_SIZE     1
#define ST_TIMEVAL  2
#define ST_COUNT    3
#define ST_HEAPCOST 4

/*
** Callsite loop direction flags.
*/
#define ST_FOLLOW_SIBLINGS   0
#define ST_FOLLOW_PARENTS    1

/*
** Graph data.
*/
#define STGD_WIDTH           640
#define STGD_HEIGHT          480
#define STGD_MARGIN          75
#define STGD_SPACE_X         (STGD_WIDTH - (2 * STGD_MARGIN))
#define STGD_SPACE_Y         (STGD_HEIGHT - (2 * STGD_MARGIN))

/*
** Minimum lifetime default, in seconds.
*/
#define ST_DEFAULT_LIFETIME_MIN 10

/*
**  Allocations fall to this boundry size by default.
**  Overhead is taken after alignment.
**
**  The msvcrt malloc has an alignment of 16 with an overhead of 8.
**  The win32 HeapAlloc has an alignment of 8 with an overhead of 8.
*/
#define ST_DEFAULT_ALIGNMENT_SIZE 16
#define ST_DEFAULT_OVERHEAD_SIZE 8

/*
** Numer of substring match specifications to allow.
*/
#define ST_SUBSTRING_MATCH_MAX 5

/*
** Max Number of patterns per rule
*/
#define ST_MAX_PATTERNS_PER_RULE 16

/*
** Rule pointers and child pointers are allocated in steps of ST_ALLOC_STEP
*/
#define ST_ALLOC_STEP 16

/*
** Name of the root category. Appears in UI.
*/
#define ST_ROOT_CATEGORY_NAME "All"

/*
**  Size of our option string buffers.
*/
#define ST_OPTION_STRING_MAX 256

/*
** Set the desired resolution of the timevals.
** The resolution is just mimicking what is recorded in the trace-malloc
**  output, and that is currently milliseconds.
*/
#define ST_TIMEVAL_RESOLUTION 1000
#define ST_TIMEVAL_FORMAT "%.3f"
#define ST_TIMEVAL_PRINTABLE(timeval) ((PRFloat64)(timeval) / (PRFloat64)ST_TIMEVAL_RESOLUTION)
#define ST_TIMEVAL_PRINTABLE64(timeval) ((PRFloat64)((PRInt64)(timeval)) / (PRFloat64)ST_TIMEVAL_RESOLUTION)
#define ST_TIMEVAL_MAX ((PRUint32)-1 - ((PRUint32)-1 % ST_TIMEVAL_RESOLUTION))

#define ST_MICROVAL_RESOLUTION 1000000
#define ST_MICROVAL_FORMAT "%.6f"
#define ST_MICROVAL_PRINTABLE(timeval) ((PRFloat64)(timeval) / (PRFloat64)ST_MICROVAL_RESOLUTION)
#define ST_MICROVAL_PRINTABLE64(timeval) ((PRFloat64)((PRInt64)(timeval)) / (PRFloat64)ST_MICROVAL_RESOLUTION)
#define ST_MICROVAL_MAX ((PRUint32)-1 - ((PRUint32)-1 % ST_MICROVAL_RESOLUTION))

/*
** Forward Declaration
*/
typedef struct __struct_STCategoryNode STCategoryNode;
typedef struct __struct_STCategoryRule STCategoryRule;


/*
** STAllocEvent
**
** An event that happens to an allocation (malloc, free, et. al.)
*/
typedef struct __struct_STAllocEvent
{
        /*
        ** The type of allocation event.
        ** This maps directly to the trace malloc events (i.e. TM_EVENT_MALLOC)
        */
        char mEventType;
        
        /*
        ** Each event, foremost, has a chronologically increasing ID in
        **  relation to other allocation events.  This is a time stamp
        **  of sorts.
        */
        PRUint32 mTimeval;
        
        /*
        ** Every event has a heap ID (pointer).
        ** In the event of a realloc, this is the new heap ID.
        ** In the event of a free, this is the previous heap ID value.
        */
        PRUint32 mHeapID;
        
        /*
        ** Every event, along with the heap ID, tells of the size.
        ** In the event of a realloc, this is the new size.
        ** In th event of a free, this is the previous size.
        */
        PRUint32 mHeapSize;

        /*
        ** Every event has a callsite/stack backtrace.
        ** In the event of a realloc, this is the new callsite.
        ** In the event of a free, this is the previous call site.
        */
        tmcallsite* mCallsite;
} STAllocEvent;

/*
** STAllocation
**
** An allocation is a temporal entity in the heap.
** It possibly lives under different heap IDs (pointers) and different
**  sizes during its given time.
** An allocation is defined by the events during its lifetime.
** An allocation's lifetime is defined by the range of event IDs it holds.
*/
typedef struct __struct_STAllocation
{
        /*
        ** The array of events.
        */
        PRUint32 mEventCount;
        STAllocEvent* mEvents;
        
        /*
        ** The lifetime/lifespan of the allocation.
        */
        PRUint32 mMinTimeval;
        PRUint32 mMaxTimeval;

        /*
        ** Index of this allocation in the global run.
        */
        PRUint32 mRunIndex;

        /*
        ** The runtime cost of heap events in this allocation.
        ** The cost is defined as the number of time units recorded as being
        **  spent in heap code (time of malloc, free, et al.).
        ** We do not track individual event cost in order to save space.
        */
        PRUint32 mHeapRuntimeCost;
} STAllocation;

/*
** STCallsiteStats
**
** Stats regarding a run, kept mainly for callsite runs.
*/
typedef struct __struct_STCallsiteStats
{
        /*
        ** Sum timeval of the allocations.
        ** Callsite runs total all allocations below the callsite.
        */
        PRUint64 mTimeval64;

        /*
        ** Sum weight of the allocations.
        ** Callsite runs total all allocations below the callsite.
        */
        PRUint64 mWeight64;

        /*
        ** Sum size of the allocations.
        ** Callsite runs total all allocations below the callsite.
        */
        PRUint32 mSize;

        /*
        ** A stamp, indicated the relevance of the run.
        ** If the stamp does not match the origin value, the
        **  data contained here-in is considered invalid.
        */
        PRUint32 mStamp;

        /*
        ** A sum total of allocations (note, not sizes)  below the callsite.
        ** This is NOT the same as STRun::mAllocationCount which
        **  tracks the STRun::mAllocations array size.
        */
        PRUint32 mCompositeCount;

        /*
        ** A sum total runtime cost of heap operations below the calliste.
        ** The cost is defined as the number of time units recorded as being
        **  spent in heap code (time of malloc, free, et al.).
        */
        PRUint32 mHeapRuntimeCost;
} STCallsiteStats;

/*
** STRun
**
** A run is a closed set of allocations.
** Given a run, we can deduce information about the contained allocations.
** We can also determine if an allocation lives beyond a run (leak).
**
** A run might be used to represent allocations for an entire application.
** A run might also be used to represent allocations from a single callstack.
*/
typedef struct __struct_STRun
{
        /*
        ** The array of allocations.
        */
        PRUint32 mAllocationCount;
        STAllocation** mAllocations;

        /*
        ** Callsites like to keep some information.
        ** As callsites are possibly shared between all contexts, each
        **      different context needs to keep different stats.
        */
        STCallsiteStats *mStats;

} STRun;

/*
** Categorize allocations
**
** The objective is to have a tree of categories with each leaf node of the tree
** matching a set of callsites that belong to the category. Each category can
** signify a functional area like say css and hence the user can browse this
** tree looking for how much of each of these are live at an instant.
*/

/*
** STCategoryNode
*/

struct __struct_STCategoryNode
{
        /*
        ** Category name
        */
        const char *categoryName;

        /*
        ** Pointer to parent node. NULL for Root.
        */
        STCategoryNode *parent;

        /*
        ** For non-leaf nodes, an array of children node pointers.
        ** NULL if leaf node.
        */
        STCategoryNode** children;
        PRUint32 nchildren;

        /*
        ** The Run(s). Valid for both leaf and parent nodes.
        ** One run per --Context to handle multiple data sets.
        ** The relevant index for the particular request will be
        **      mIndex stored by the mContext of the request.
        */
        STRun **runs;
};


struct __struct_STCategoryRule
{
        /*
        ** The pattern for the rule. Patterns are an array of strings.
        ** A callsite needs to pass substring match for all the strings.
        */
        char* pats[ST_MAX_PATTERNS_PER_RULE];
        PRUint32 patlen[ST_MAX_PATTERNS_PER_RULE];
        PRUint32 npats;

        /*
        ** Category name that this rule belongs to
        */
        const char* categoryName;

        /*
        ** The node this should be categorized into
        */
        STCategoryNode* node;
};


/*
** CategoryName to Node mapping table
*/
typedef struct __struct_STCategoryMapEntry {
    STCategoryNode* node;
    const char * categoryName;
} STCategoryMapEntry;

/*
**  Option genres.
**
**  This helps to determine what functionality each option effects.
**  In specific, this will help use determine when and when not to
**      totally recaclulate the sorted run and categories.
**  Be very aware that adding things to a particular genre, or adding a genre,
**      may completely screw up the caching algorithms of SpaceTrace.
**  See contextLookup() or ask someone that knows if you are in doubt.
*/
typedef enum __enum_STOptionGenre
{
    CategoryGenre = 0,
    DataSortGenre,
    DataSetGenre,
    DataSizeGenre,
    UIGenre,
    ServerGenre,
    BatchModeGenre,

    /*
    **  Last one please.
    */
    MaxGenres
}
STOptionGenre;

/*
**  STOptions
**
**  Structure containing the varios options for the code.
**  The definition of these options exists in a different file.
**  We access that definition via macros to inline our structure definition.
*/
#define ST_CMD_OPTION_BOOL(option_name, option_genre, option_help) PRBool m##option_name;
#define ST_CMD_OPTION_STRING(option_name, option_genre, default_value, option_help) char m##option_name[ST_OPTION_STRING_MAX];
#define ST_CMD_OPTION_STRING_ARRAY(option_name, option_genre, array_size, option_help) char m##option_name[array_size][ST_OPTION_STRING_MAX];
#define ST_CMD_OPTION_STRING_PTR_ARRAY(option_name, option_genre, option_help) const char** m##option_name; PRUint32 m##option_name##Count;
#define ST_CMD_OPTION_UINT32(option_name, option_genre, default_value, multiplier, option_help) PRUint32 m##option_name;
#define ST_CMD_OPTION_UINT64(option_name, option_genre, default_value, multiplier, option_help) PRUint64 m##option_name##64;

typedef struct __struct_STOptions
{
#include "stoptions.h"
}
STOptions;

typedef struct __struct_STContext
/*
**  A per request, thread safe, manner of accessing the contained members.
**  A reader/writer lock ensures that the data is properly initialized before
**      readers of the data begin their work.
**
**  mRWLock             reader/writer lock.
**                      writer lock is held to ensure initialization, though
**                          others can be attempting to acquire read locks
**                          at that time.
**                      writer lock is also used in destruction to make sure
**                          there are no more readers of data contained herein.
**                      reader lock is to allow multiple clients to read the
**                          data at the same time; implies is they must not
**                          write anything.
**  mIndex              Consider this much like thread private data or thread
**                          local storage in a few places.
**                      The index is specifically reserved for this context's
**                          usage in other data structure array's provided
**                          for the particular thread/client/context.
**                      This should not be modified after initialization.
**  mSortedRun          A pre sorted run taken from the global run, with our
**                          options applied.
**  mImageLock          An overly simplistic locking mechanism to protect the
**                          shared image cache.
**                      The proper implementation would have a reader/writer
**                          lock per cached image data.
**                      However, this will prove to be simpler for the time
**                          being.
**  mFootprintCached    Whether or not YData contains something useful.
**  mTimevalCached      Whether or not YData contains something useful.
**  mLifespanCached     Whether or not YData contains something useful.
**  mWeightCached       Whether or not YData contains something useful.
**  mFootprintYData     Precomputed cached graph data.
**  mTimevalYData       Precomputed cached graph data.
**  mLifespanYData      Precomputed cached graph data.
**  mWeightYData        Precomputed cached graph data.
*/
{
    PRRWLock* mRWLock;
    PRUint32 mIndex;
    STRun* mSortedRun;
#if ST_WANT_GRAPHS
    PRLock* mImageLock;
    PRBool mFootprintCached;
    PRBool mTimevalCached;
    PRBool mLifespanCached;
    PRBool mWeightCached;
    PRUint32 mFootprintYData[STGD_SPACE_X];
    PRUint32 mTimevalYData[STGD_SPACE_X];
    PRUint32 mLifespanYData[STGD_SPACE_X];
    PRUint64 mWeightYData64[STGD_SPACE_X];
#endif
}
STContext;


typedef struct __struct_STContextCacheItem
/*
**  This basically pools the common items that the context cache will
**      want to track on a per context basis.
**
**  mOptions        What options this item represents.
**  mContext        State/data this cache item is wrapping.
**  mReferenceCount A count of clients currently using this item.
**                  Should this item be 0, then the cache might
**                      decide to evict this context.
**                  Should this item not be 0, once it reaches
**                      zero a condition variable in the context cache
**                      will be signaled to notify the availability.
**  mLastAccessed   A timestamp of when this item was last accessed/released.
**                  Ignore this unless the reference count is 0,
**                  This is used to evict the oldest unused item from
**                      the context cache.
**  mInUse          Mainly PR_FALSE only at the beginning of the process,
**                      but this indicates that the item has not yet been
**                      used at all, and thus shouldn't be evaluated for
**                      a cache hit.
*/
{
    STOptions mOptions;
    STContext mContext;
    PRInt32 mReferenceCount;
    PRIntervalTime mLastAccessed;
    PRBool mInUse;
}
STContextCacheItem;


typedef struct __struct_STContextCache
/*
**  A thread safe, possibly blocking, cache of context items.
**
**  mLock       Must hold the lock to read/access/write to this struct, as
**                  well as any items it holds.
**  mCacheMiss  All items are busy and there were no cache matches.
**              This condition variable is used to wait until an item becomes
**                  "available" to be evicted from the cache.
**  mItems      Array of items.
**  mItemCount  Number of items in array.
**              This is generally the same as the global option's command line
**                  mContexts....
*/
{
    PRLock* mLock;
    PRCondVar* mCacheMiss;
    STContextCacheItem* mItems;
    PRUint32 mItemCount;
}
STContextCache;


/*
** STRequest
**
** Things specific to a request.
*/
typedef struct __struct_STRequest
{
        /*
        ** Sink/where to output.
        */
        PRFileDesc* mFD;

        /*
        ** The filename requested.
        */
        const char* mGetFileName;

        /*
        **  The GET form data, if any.
        */
        const FormData* mGetData;

        /*
        **  Options specific to this request.
        */
        STOptions mOptions;

        /*
        **  The context/data/state of the request.
        */
        STContext* mContext;
} STRequest;


/*
** STGlobals
**
** Various globals we keep around.
*/
typedef struct __struct_STGlobals
{
        /*
        ** The string which identifies this program.
        */
        const char* mProgramName;

        /*
        **  Options derived from the command line.
        **  These are used as defaults, and should remain static during
        **      the run of the application.
        */
        STOptions mCommandLineOptions;

        /*
        **  Context cache.
        **  As clients come in, based on their options, a different context
        **      will be used to service them.
        */
        STContextCache mContextCache;

        /*
        ** Various counters for different types of events.
        */
        PRUint32 mMallocCount;
        PRUint32 mCallocCount;
        PRUint32 mReallocCount;
        PRUint32 mFreeCount;

        /*
        ** Total events, operation counter.
        */
        PRUint32 mOperationCount;

        /*
        ** The "run" of the input.
        */
        STRun mRun;

        /*
        ** Operation minimum/maximum timevals.
        ** So that we can determine the overall timeval of the run.
        ** NOTE:  These are NOT the options to control the data set.
        */
        PRUint32 mMinTimeval;
        PRUint32 mMaxTimeval;

        /*
        ** Calculates peak allocation overall for all allocations.
        */
        PRUint32 mPeakMemoryUsed;
        PRUint32 mMemoryUsed;

        /*
        ** A list of rules for categorization read in from the mCategoryFile
        */
       STCategoryRule** mCategoryRules;
       PRUint32 mNRules;

       /*
       ** CategoryName to Node mapping table
       */
       STCategoryMapEntry** mCategoryMap;
       PRUint32 mNCategoryMap;

       /*
       ** Categorized allocations. For now we support only one tree.
       */
       STCategoryNode mCategoryRoot;

       /*
       **   tmreader hash tables.
       **   Moved into globals since we need to destroy these only after all
       **       client threads are finishes (after PR_Cleanup).
       */
       tmreader* mTMR;
} STGlobals;


/*
** Function prototypes
*/
extern STRun* createRun(STContext* inContext, PRUint32 aStamp);
extern void freeRun(STRun* aRun);
extern int initCategories(STGlobals* g);
extern int categorizeRun(STOptions* inOptions, STContext* inContext, const STRun* aRun, STGlobals* g);
extern STCategoryNode* findCategoryNode(const char *catName, STGlobals *g);
extern int freeCategories(STGlobals* g);
extern int displayCategoryReport(STRequest* inRequest, STCategoryNode *root, int depth);

extern int recalculateAllocationCost(STOptions* inOptions, STContext* inContext, STRun* aRun, STAllocation* aAllocation, PRBool updateParent);
extern void htmlHeader(STRequest* inRequest, const char* aTitle);
extern void htmlFooter(STRequest* inRequest);
extern void htmlAnchor(STRequest* inRequest,
                       const char* aHref,
                       const char* aText,
                       const char* aTarget,
                       const char* aClass,
                       STOptions* inOptions);
extern char *FormatNumber(PRInt32 num);

/*
** shared globals
*/
extern STGlobals globals;

#endif /* spacetrace_h__ */