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gecko/tools/trace-malloc/spacetrace.h

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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 "mozilla/StandardInteger.h"
#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) ((double)(timeval) / (double)ST_TIMEVAL_RESOLUTION)
#define ST_TIMEVAL_PRINTABLE64(timeval) ((double)((int64_t)(timeval)) / (double)ST_TIMEVAL_RESOLUTION)
#define ST_TIMEVAL_MAX ((uint32_t)-1 - ((uint32_t)-1 % ST_TIMEVAL_RESOLUTION))
#define ST_MICROVAL_RESOLUTION 1000000
#define ST_MICROVAL_FORMAT "%.6f"
#define ST_MICROVAL_PRINTABLE(timeval) ((double)(timeval) / (double)ST_MICROVAL_RESOLUTION)
#define ST_MICROVAL_PRINTABLE64(timeval) ((double)((int64_t)(timeval)) / (double)ST_MICROVAL_RESOLUTION)
#define ST_MICROVAL_MAX ((uint32_t)-1 - ((uint32_t)-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.
*/
uint32_t 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.
*/
uint32_t 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.
*/
uint32_t 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.
*/
uint32_t mEventCount;
STAllocEvent* mEvents;
/*
** The lifetime/lifespan of the allocation.
*/
uint32_t mMinTimeval;
uint32_t mMaxTimeval;
/*
** Index of this allocation in the global run.
*/
uint32_t 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.
*/
uint32_t 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.
*/
uint64_t mTimeval64;
/*
** Sum weight of the allocations.
** Callsite runs total all allocations below the callsite.
*/
uint64_t mWeight64;
/*
** Sum size of the allocations.
** Callsite runs total all allocations below the callsite.
*/
uint32_t 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.
*/
uint32_t 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.
*/
uint32_t 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.).
*/
uint32_t 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.
*/
uint32_t 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;
uint32_t 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];
uint32_t patlen[ST_MAX_PATTERNS_PER_RULE];
uint32_t 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; uint32_t m##option_name##Count;
#define ST_CMD_OPTION_UINT32(option_name, option_genre, default_value, multiplier, option_help) uint32_t m##option_name;
#define ST_CMD_OPTION_UINT64(option_name, option_genre, default_value, multiplier, option_help) uint64_t 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;
uint32_t mIndex;
STRun* mSortedRun;
#if ST_WANT_GRAPHS
PRLock* mImageLock;
PRBool mFootprintCached;
PRBool mTimevalCached;
PRBool mLifespanCached;
PRBool mWeightCached;
uint32_t mFootprintYData[STGD_SPACE_X];
uint32_t mTimevalYData[STGD_SPACE_X];
uint32_t mLifespanYData[STGD_SPACE_X];
uint64_t 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 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;
int32_t 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;
uint32_t 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.
*/
uint32_t mMallocCount;
uint32_t mCallocCount;
uint32_t mReallocCount;
uint32_t mFreeCount;
/*
** Total events, operation counter.
*/
uint32_t 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.
*/
uint32_t mMinTimeval;
uint32_t mMaxTimeval;
/*
** Calculates peak allocation overall for all allocations.
*/
uint32_t mPeakMemoryUsed;
uint32_t mMemoryUsed;
/*
** A list of rules for categorization read in from the mCategoryFile
*/
STCategoryRule** mCategoryRules;
uint32_t mNRules;
/*
** CategoryName to Node mapping table
*/
STCategoryMapEntry** mCategoryMap;
uint32_t 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, uint32_t 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(int32_t num);
/*
** shared globals
*/
extern STGlobals globals;
#endif /* spacetrace_h__ */
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