diff options
Diffstat (limited to 'sgx/services4/srvkm/common/perproc.c')
| -rw-r--r-- | sgx/services4/srvkm/common/perproc.c | 180 |
1 files changed, 137 insertions, 43 deletions
diff --git a/sgx/services4/srvkm/common/perproc.c b/sgx/services4/srvkm/common/perproc.c index eb73166..f228828 100644 --- a/sgx/services4/srvkm/common/perproc.c +++ b/sgx/services4/srvkm/common/perproc.c @@ -1,28 +1,45 @@ -/********************************************************************** - * - * Copyright (C) Imagination Technologies Ltd. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful but, except - * as otherwise stated in writing, without any warranty; without even the - * implied warranty of merchantability or fitness for a particular purpose. - * See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - * The full GNU General Public License is included in this distribution in - * the file called "COPYING". - * - * Contact Information: - * Imagination Technologies Ltd. <gpl-support@imgtec.com> - * Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK - * - ******************************************************************************/ +/*************************************************************************/ /*! +@Title Per-process storage +@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved +@Description Manage per-process storage +@License Dual MIT/GPLv2 + +The contents of this file are subject to the MIT license as set out below. + +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. + +Alternatively, the contents of this file may be used under the terms of +the GNU General Public License Version 2 ("GPL") in which case the provisions +of GPL are applicable instead of those above. + +If you wish to allow use of your version of this file only under the terms of +GPL, and not to allow others to use your version of this file under the terms +of the MIT license, indicate your decision by deleting the provisions above +and replace them with the notice and other provisions required by GPL as set +out in the file called "GPL-COPYING" included in this distribution. If you do +not delete the provisions above, a recipient may use your version of this file +under the terms of either the MIT license or GPL. + +This License is also included in this distribution in the file called +"MIT-COPYING". + +EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) 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; AND (B) 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. + +*/ /**************************************************************************/ #include "services_headers.h" #include "resman.h" @@ -37,6 +54,18 @@ static HASH_TABLE *psHashTab = IMG_NULL; +/*! +****************************************************************************** + + @Function FreePerProcData + + @Description Free a per-process data area + + @Input psPerProc - pointer to per-process data area + + @Return Error code, or PVRSRV_OK + +******************************************************************************/ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) { PVRSRV_ERROR eError; @@ -54,7 +83,10 @@ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) if (uiPerProc == 0) { PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: Couldn't find process in per-process data hash table")); - + /* + * We must have failed early in the per-process data area + * creation, before the process ID was set. + */ PVR_ASSERT(psPerProc->ui32PID == 0); } else @@ -63,7 +95,7 @@ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) PVR_ASSERT(((PVRSRV_PER_PROCESS_DATA *)uiPerProc)->ui32PID == psPerProc->ui32PID); } - + /* Free handle base for this process */ if (psPerProc->psHandleBase != IMG_NULL) { eError = PVRSRVFreeHandleBase(psPerProc->psHandleBase); @@ -74,7 +106,7 @@ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) } } - + /* Release handle for per-process data area */ if (psPerProc->hPerProcData != IMG_NULL) { eError = PVRSRVReleaseHandle(KERNEL_HANDLE_BASE, psPerProc->hPerProcData, PVRSRV_HANDLE_TYPE_PERPROC_DATA); @@ -86,7 +118,7 @@ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) } } - + /* Call environment specific per process deinit function */ eError = OSPerProcessPrivateDataDeInit(psPerProc->hOsPrivateData); if (eError != PVRSRV_OK) { @@ -98,7 +130,7 @@ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) sizeof(*psPerProc), psPerProc, psPerProc->hBlockAlloc); - + /*not nulling pointer, copy on stack*/ if (eError != PVRSRV_OK) { PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: Couldn't free per-process data (%d)", eError)); @@ -109,18 +141,44 @@ static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc) } +/*! +****************************************************************************** + + @Function PVRSRVPerProcessData + + @Description Return per-process data area + + @Input ui32PID - process ID + + @Return Pointer to per-process data area, or IMG_NULL on error. + +******************************************************************************/ PVRSRV_PER_PROCESS_DATA *PVRSRVPerProcessData(IMG_UINT32 ui32PID) { PVRSRV_PER_PROCESS_DATA *psPerProc; PVR_ASSERT(psHashTab != IMG_NULL); - + /* Look for existing per-process data area */ psPerProc = (PVRSRV_PER_PROCESS_DATA *)HASH_Retrieve(psHashTab, (IMG_UINTPTR_T)ui32PID); return psPerProc; } +/*! +****************************************************************************** + + @Function PVRSRVPerProcessDataConnect + + @Description Allocate per-process data area, or increment refcount if one + already exists for this PID. + + @Input ui32PID - process ID + ppsPerProc - Pointer to per-process data area + + @Return PVRSRV_ERROR + +******************************************************************************/ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flags) { PVRSRV_PER_PROCESS_DATA *psPerProc; @@ -132,12 +190,12 @@ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flag return PVRSRV_ERROR_INIT_FAILURE; } - + /* Look for existing per-process data area */ psPerProc = (PVRSRV_PER_PROCESS_DATA *)HASH_Retrieve(psHashTab, (IMG_UINTPTR_T)ui32PID); if (psPerProc == IMG_NULL) { - + /* Allocate per-process data area */ eError = OSAllocMem(PVRSRV_OS_NON_PAGEABLE_HEAP, sizeof(*psPerProc), (IMG_PVOID *)&psPerProc, @@ -170,7 +228,7 @@ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flag PVR_UNREFERENCED_PARAMETER(ui32Flags); #endif - + /* Call environment specific per process init function */ eError = OSPerProcessPrivateDataInit(&psPerProc->hOsPrivateData); if (eError != PVRSRV_OK) { @@ -178,7 +236,7 @@ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flag goto failure; } - + /* Allocate a handle for the per-process data area */ eError = PVRSRVAllocHandle(KERNEL_HANDLE_BASE, &psPerProc->hPerProcData, psPerProc, @@ -190,7 +248,7 @@ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flag goto failure; } - + /* Allocate handle base for this process */ eError = PVRSRVAllocHandleBase(&psPerProc->psHandleBase); if (eError != PVRSRV_OK) { @@ -198,7 +256,7 @@ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flag goto failure; } - + /* Set per-process handle options */ eError = OSPerProcessSetHandleOptions(psPerProc->psHandleBase); if (eError != PVRSRV_OK) { @@ -206,7 +264,7 @@ PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32 ui32PID, IMG_UINT32 ui32Flag goto failure; } - + /* Create a resource manager context for the process */ eError = PVRSRVResManConnect(psPerProc, &psPerProc->hResManContext); if (eError != PVRSRV_OK) { @@ -231,6 +289,19 @@ failure: } +/*! +****************************************************************************** + + @Function PVRSRVPerProcessDataDisconnect + + @Description Decrement refcount for per-process data area, + and free the resources if necessary. + + @Input ui32PID - process ID + + @Return IMG_VOID + +******************************************************************************/ IMG_VOID PVRSRVPerProcessDataDisconnect(IMG_UINT32 ui32PID) { PVRSRV_ERROR eError; @@ -255,10 +326,10 @@ IMG_VOID PVRSRVPerProcessDataDisconnect(IMG_UINT32 ui32PID) PVRSRVTimeTraceBufferDestroy(ui32PID); #endif - + /* Close the Resource Manager connection */ PVRSRVResManDisconnect(psPerProc->hResManContext, IMG_FALSE); - + /* Free the per-process data */ eError = FreePerProcessData(psPerProc); if (eError != PVRSRV_OK) { @@ -275,11 +346,21 @@ IMG_VOID PVRSRVPerProcessDataDisconnect(IMG_UINT32 ui32PID) } +/*! +****************************************************************************** + + @Function PVRSRVPerProcessDataInit + + @Description Initialise per-process data management + + @Return Error code, or PVRSRV_OK + +******************************************************************************/ PVRSRV_ERROR PVRSRVPerProcessDataInit(IMG_VOID) { PVR_ASSERT(psHashTab == IMG_NULL); - + /* Create hash table */ psHashTab = HASH_Create(HASH_TAB_INIT_SIZE); if (psHashTab == IMG_NULL) { @@ -290,12 +371,22 @@ PVRSRV_ERROR PVRSRVPerProcessDataInit(IMG_VOID) return PVRSRV_OK; } +/*! +****************************************************************************** + + @Function PVRSRVPerProcessDataDeInit + + @Description De-initialise per-process data management + + @Return Error code, or PVRSRV_OK + +******************************************************************************/ PVRSRV_ERROR PVRSRVPerProcessDataDeInit(IMG_VOID) { - + /* Destroy per-process data area hash table */ if (psHashTab != IMG_NULL) { - + /* Free the hash table */ HASH_Delete(psHashTab); psHashTab = IMG_NULL; } @@ -303,3 +394,6 @@ PVRSRV_ERROR PVRSRVPerProcessDataDeInit(IMG_VOID) return PVRSRV_OK; } +/****************************************************************************** + End of file (perproc.c) +******************************************************************************/ |