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/* $Id: prfcoreinit.cpp.h 29 2009-07-01 20:30:29Z bird $ */
/** @file
* kProfiler Mark 2 - Core Initialization Code Template.
*/
/*
* Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* Calculates the size of the profiler data set.
*
* @returns The size of the data set in bytes.
*
* @param cMaxFunctions The max number of functions.
* @param cbMaxModSeg The max bytes for module segments.
* @param cMaxThreads The max number of threads.
* @param cMaxStacks The max number of stacks. (should be less or equal to the max number of threads)
* @param cMaxStackFrames The max number of frames on each of the stacks.
*
* @remark This function does not input checks, it only aligns it. The caller is
* responsible for the input to make some sense.
*/
KPRF_DECL_FUNC(KU32, CalcSize)(KU32 cMaxFunctions, KU32 cbMaxModSegs, KU32 cMaxThreads, KU32 cMaxStacks, KU32 cMaxStackFrames)
{
/*
* Normalize input.
*/
KPRF_SETMIN_ALIGN(cMaxFunctions, 16, 16);
KPRF_SETMIN_ALIGN(cbMaxModSegs, KPRF_SIZEOF(MODSEG), 32);
KPRF_SETMIN_ALIGN(cMaxThreads, 1, 1);
KPRF_SETMIN_ALIGN(cMaxStacks, 1, 1);
KPRF_SETMIN_ALIGN(cMaxStackFrames, 32, 32);
/*
* Calc the size from the input.
* We do not take overflows into account, stupid user means stupid result.
*/
KU32 cb = KPRF_OFFSETOF(HDR, aiFunctions[cMaxFunctions]);
KU32 cbTotal = KPRF_ALIGN(cb, 32);
cb = cMaxFunctions * KPRF_SIZEOF(FUNC);
cbTotal += KPRF_ALIGN(cb, 32);
cbTotal += cbMaxModSegs;
cb = cMaxThreads * KPRF_SIZEOF(THREAD);
cbTotal += KPRF_ALIGN(cb, 32);
cb = cMaxStacks * KPRF_SIZEOF(STACK);
cbTotal += KPRF_ALIGN(cb, 32);
cb = cMaxStackFrames * cMaxStacks * KPRF_SIZEOF(FRAME);
cbTotal += KPRF_ALIGN(cb, 32);
return cbTotal;
}
/**
* Initializes the profiler data set.
*
* @returns Pointer to the initialized profiler header on success.
* @returns NULL if the input doesn't add up.
*
* @param pvData Where to initialize the profiler data set.
* @param cbData The size of the available data.
* @param cMaxFunctions The max number of functions.
* @param cbMaxModSeg The max bytes for module segments.
* @param cMaxThreads The max number of threads.
* @param cMaxStacks The max number of stacks. (should be less or equal to the max number of threads)
* @param cMaxStackFrames The max number of frames on each of the stacks.
*
*/
KPRF_DECL_FUNC(KPRF_TYPE(P,HDR), Init)(void *pvData, KU32 cbData, KU32 cMaxFunctions, KU32 cbMaxModSegs,
KU32 cMaxThreads, KU32 cMaxStacks, KU32 cMaxStackFrames)
{
/*
* Normalize the input.
*/
if (!pvData)
return NULL;
KPRF_SETMIN_ALIGN(cMaxFunctions, 16, 16);
KPRF_SETMIN_ALIGN(cbMaxModSegs, KPRF_SIZEOF(MODSEG), 32);
KPRF_SETMIN_ALIGN(cMaxThreads, 1, 1);
KPRF_SETMIN_ALIGN(cMaxStacks, 1, 1);
KPRF_SETMIN_ALIGN(cMaxStackFrames, 32, 32);
/*
* The header.
*/
KU32 off = 0;
KU32 cb = KPRF_OFFSETOF(HDR, aiFunctions[cMaxFunctions]);
cb = KPRF_ALIGN(cb, 32);
if (cbData < off + cb || off > off + cb)
return NULL;
KPRF_TYPE(P,HDR) pHdr = (KPRF_TYPE(P,HDR))pvData;
/* the core header */
pHdr->u32Magic = 0; /* Set at the very end */
pHdr->cFormatBits = KPRF_BITS;
pHdr->uBasePtr = 0; /* Can be set afterwards using SetBasePtr. */
#if KPRF_BITS <= 16
pHdr->u16Reserved = 0;
#endif
#if KPRF_BITS <= 32
pHdr->u32Reserved = 0;
#endif
pHdr->cb = cbData;
pHdr->cbAllocated = cbData;
/* functions */
off += cb;
cb = cMaxFunctions * KPRF_SIZEOF(FUNC);
cb = KPRF_ALIGN(cb, 32);
if (cbData < off + cb || off > off + cb)
return NULL;
pHdr->cMaxFunctions = cMaxFunctions;
pHdr->cFunctions = 0;
pHdr->offFunctions = off;
pHdr->cbFunction = KPRF_SIZEOF(FUNC);
/* modsegs */
off += cb;
cb = KPRF_ALIGN(cbMaxModSegs, 32);
if (cbData < off + cb || off > off + cb)
return NULL;
pHdr->cbMaxModSegs = cbMaxModSegs;
pHdr->cbModSegs = 0;
pHdr->offModSegs = off;
/* threads */
off += cb;
cb = cMaxThreads * KPRF_SIZEOF(THREAD);
cb = KPRF_ALIGN(cb, 32);
if (cbData < off + cb || off > off + cb)
return NULL;
pHdr->cMaxThreads = cMaxThreads;
pHdr->cThreads = 0;
pHdr->offThreads = off;
pHdr->cbThread = KPRF_SIZEOF(THREAD);
/* stacks */
off += cb;
cb = cMaxStacks * KPRF_OFFSETOF(STACK, aFrames[cMaxStackFrames]);
cb = KPRF_ALIGN(cb, 32);
if (cbData < off + cb || off > off + cb)
return NULL;
pHdr->cMaxStacks = cMaxStacks;
pHdr->cStacks = 0;
pHdr->offStacks = off;
pHdr->cbStack = KPRF_OFFSETOF(STACK, aFrames[cMaxStackFrames]);
pHdr->cMaxStackFrames = cMaxStackFrames;
/* commandline */
pHdr->offCommandLine = 0;
pHdr->cchCommandLine = 0;
/* the final size */
pHdr->cb = off + cb;
/*
* Done.
*/
pHdr->u32Magic = KPRF_TYPE(,HDR_MAGIC);
return pHdr;
}
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