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Diffstat (limited to 'src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h')
| -rw-r--r-- | src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h b/src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h new file mode 100644 index 0000000..686b452 --- /dev/null +++ b/src/lib/kStuff/kProfiler2/prfcorefunction.cpp.h @@ -0,0 +1,127 @@ +/* $Id: prfcorefunction.cpp.h 29 2009-07-01 20:30:29Z bird $ */ +/** @file + * kProfiler Mark 2 - Core NewFunction 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. + */ + + +/** + * Creates a new function. + * + * @returns Pointer to the new function. + * @returns NULL if we're out of space. + */ +static KPRF_TYPE(P,FUNC) KPRF_NAME(NewFunction)(KPRF_TYPE(P,HDR) pHdr,KPRF_TYPE(,UPTR) uPC) +{ + /* + * First find the position of the function (it might actually have been inserted by someone else by now too). + */ + KPRF_FUNCS_WRITE_LOCK(); + + KPRF_TYPE(P,FUNC) paFunctions = KPRF_OFF2PTR(P,FUNC, pHdr->offFunctions, pHdr); + KI32 iStart = 0; + KI32 iLast = pHdr->cFunctions - 1; + KI32 i = iLast / 2; + for (;;) + { + KU32 iFunction = pHdr->aiFunctions[i]; + KPRF_TYPE(,IPTR) iDiff = uPC - paFunctions[iFunction].uEntryPtr; + if (!iDiff) + { + KPRF_FUNCS_WRITE_UNLOCK(); + return &paFunctions[iFunction]; + } + if (iLast == iStart) + break; + if (iDiff < 0) + iLast = i - 1; + else + iStart = i + 1; + if (iLast < iStart) + break; + i = iStart + (iLast - iStart) / 2; + } + + /* + * Adjust the index so we're exactly in the right spot. + * (I've too much of a headache to figure out if the above loop leaves us where we should be.) + */ + const KI32 iNew = pHdr->cFunctions; + if (paFunctions[pHdr->aiFunctions[i]].uEntryPtr > uPC) + { + while ( i > 0 + && paFunctions[pHdr->aiFunctions[i - 1]].uEntryPtr > uPC) + i--; + } + else + { + while ( i < iNew + && paFunctions[pHdr->aiFunctions[i]].uEntryPtr < uPC) + i++; + } + + /* + * Ensure that there still is space for the function. + */ + if (iNew >= (KI32)pHdr->cMaxFunctions) + { + KPRF_FUNCS_WRITE_UNLOCK(); + return NULL; + } + pHdr->cFunctions++; + KPRF_TYPE(P,FUNC) pNew = &paFunctions[iNew]; + + /* init the new function entry */ + pNew->uEntryPtr = uPC; + pNew->offModSeg = 0; + pNew->cOnStack = 0; + pNew->cCalls = 0; + pNew->OnStack.MinTicks = ~(KU64)0; + pNew->OnStack.MaxTicks = 0; + pNew->OnStack.SumTicks = 0; + pNew->OnTopOfStack.MinTicks = ~(KU64)0; + pNew->OnTopOfStack.MaxTicks = 0; + pNew->OnTopOfStack.SumTicks = 0; + + /* shift the function index array and insert the new one. */ + KI32 j = iNew; + while (j > i) + { + pHdr->aiFunctions[j] = pHdr->aiFunctions[j - 1]; + j--; + } + pHdr->aiFunctions[i] = iNew; + KPRF_FUNCS_WRITE_UNLOCK(); + + /* + * Record the module segment (i.e. add it if it's new). + */ + pNew->offModSeg = KPRF_NAME(RecordModSeg)(pHdr, uPC); + + return pNew; +} + |