locks.c revision ae1a5c8dc1fccf7c121eda830f8d23bd094c0f16
1a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten/* 2a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * Copyright (C) 2010 The Android Open Source Project 3a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * 4a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * Licensed under the Apache License, Version 2.0 (the "License"); 5a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * you may not use this file except in compliance with the License. 6a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * You may obtain a copy of the License at 7a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * 8a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * http://www.apache.org/licenses/LICENSE-2.0 9a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * 10a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * Unless required by applicable law or agreed to in writing, software 11a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * distributed under the License is distributed on an "AS IS" BASIS, 12a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * See the License for the specific language governing permissions and 14a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * limitations under the License. 15a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten */ 16a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 17a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#include "sles_allinclusive.h" 184ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten#include <bionic_pthread.h> 194ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten 204ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten 214ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// Use this macro to validate a pthread_t before passing it into __pthread_gettid. 224ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// One of the common reasons for deadlock is trying to lock a mutex for an object 234ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// which has been destroyed (which does memset to 0x00 or 0x55 as the final step). 244ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// To avoid crashing with a SIGSEGV right before we're about to log a deadlock warning, 254ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// we check that the pthread_t is probably valid. Note that it is theoretically 264ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// possible for something to look like a valid pthread_t but not actually be valid. 274ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten// So we might still crash, but only in the case where a deadlock was imminent anyway. 284ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten#define LIKELY_VALID(ptr) (((ptr) != (pthread_t) 0) && ((((size_t) (ptr)) & 3) == 0)) 29a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 300b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 31928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief Exclusively lock an object */ 320b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 33fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#ifdef USE_DEBUG 34bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_lock_exclusive_(IObject *thiz, const char *file, int line) 35fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten{ 36fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten int ok; 37bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_mutex_trylock(&thiz->mMutex); 38fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten if (0 != ok) { 394ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // not android_atomic_acquire_load because we don't care about relative load/load ordering 404ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten int32_t oldGeneration = thiz->mGeneration; 414ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // wait up to a total of 250 ms 424ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten static const unsigned backoffs[] = {10, 20, 30, 40, 50, 100}; 434f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten unsigned i = 0; 444f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten for (;;) { 454ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // the Android version is in ms not timespec, and isn't named pthread_mutex_timedlock_np 464ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten ok = pthread_mutex_lock_timeout_np(&thiz->mMutex, backoffs[i]); 474ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten if (0 == ok) { 484f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten break; 494ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten } 504ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten if (EBUSY == ok) { 514ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // this is the expected return value for timeout, and will be handled below 524ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten } else if (EDEADLK == ok) { 534ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // we don't use the kind of mutex that can return this error, but just in case 544ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten SL_LOGE("%s:%d: recursive lock detected", file, line); 554ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten } else { 564ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // some other return value 574ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten SL_LOGE("%s:%d: pthread_mutex_lock_timeout_np returned %d", file, line, ok); 584ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten } 594ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // is anyone else making forward progress? 604ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten int32_t newGeneration = thiz->mGeneration; 614ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten if (newGeneration != oldGeneration) { 624ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // if we ever see forward progress then lock without timeout (more efficient) 634ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten goto forward_progress; 644ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten } 654ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // no, then continue trying to lock but with increasing timeouts 664f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten if (++i >= (sizeof(backoffs) / sizeof(backoffs[0]))) { 674ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // the extra block avoids a C++ compiler error about goto past initialization 684ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten { 694ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten pthread_t me = pthread_self(); 704ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten pthread_t owner = thiz->mOwner; 714ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // unlikely, but this could result in a memory fault if owner is corrupt 724ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten pid_t ownerTid = LIKELY_VALID(owner) ? __pthread_gettid(owner) : -1; 734ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten SL_LOGW("%s:%d: pthread %p (tid %d) sees object %p was locked by pthread %p" 744ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten " (tid %d) at %s:%d\n", file, line, *(void **)&me, gettid(), thiz, 754ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten *(void **)&owner, ownerTid, thiz->mFile, thiz->mLine); 764ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten } 774ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kastenforward_progress: 784ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // attempt one more time without timeout; maybe this time we will be successful 79bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_mutex_lock(&thiz->mMutex); 804f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten assert(0 == ok); 814f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten break; 824f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten } 834f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten } 84fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten } 854ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // here if mutex was successfully locked 86fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten pthread_t zero; 87fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten memset(&zero, 0, sizeof(pthread_t)); 88bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten if (0 != memcmp(&zero, &thiz->mOwner, sizeof(pthread_t))) { 894ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten pthread_t me = pthread_self(); 904ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten pthread_t owner = thiz->mOwner; 914ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten pid_t ownerTid = LIKELY_VALID(owner) ? __pthread_gettid(owner) : -1; 924ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten if (pthread_equal(pthread_self(), owner)) { 934ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten SL_LOGE("%s:%d: pthread %p (tid %d) sees object %p was recursively locked by pthread" 944ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten " %p (tid %d) at %s:%d\n", file, line, *(void **)&me, gettid(), thiz, 954ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten *(void **)&owner, ownerTid, thiz->mFile, thiz->mLine); 964f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten } else { 974ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten SL_LOGE("%s:%d: pthread %p (tid %d) sees object %p was left unlocked in unexpected" 984ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten " state by pthread %p (tid %d) at %s:%d\n", file, line, *(void **)&me, gettid(), 994ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten thiz, *(void **)&owner, ownerTid, thiz->mFile, thiz->mLine); 1004f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten } 1014f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten assert(false); 1024f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten } 103bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mOwner = pthread_self(); 104bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mFile = file; 105bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mLine = line; 1064ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten // not android_atomic_inc because we are already holding a mutex 1074ce38604afa7e4f629d568f400b0634504e60a2eGlenn Kasten ++thiz->mGeneration; 108fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten} 109fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#else 110bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_lock_exclusive(IObject *thiz) 111a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten{ 112a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten int ok; 113bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_mutex_lock(&thiz->mMutex); 114a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten assert(0 == ok); 115a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten} 116fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#endif 117a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 1180b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 119928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief Exclusively unlock an object and do not report any updates */ 1200b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 121fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#ifdef USE_DEBUG 122bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_unlock_exclusive_(IObject *thiz, const char *file, int line) 1234597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten{ 124bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(pthread_equal(pthread_self(), thiz->mOwner)); 125bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(NULL != thiz->mFile); 126bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(0 != thiz->mLine); 127bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten memset(&thiz->mOwner, 0, sizeof(pthread_t)); 128bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mFile = file; 129bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mLine = line; 130a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten int ok; 131bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_mutex_unlock(&thiz->mMutex); 132a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten assert(0 == ok); 133a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten} 1344597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten#else 135bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_unlock_exclusive(IObject *thiz) 1364597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten{ 1374597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten int ok; 138bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_mutex_unlock(&thiz->mMutex); 1394597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten assert(0 == ok); 1404597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten} 1414597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten#endif 142a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 1430b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 144928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief Exclusively unlock an object and report updates to the specified bit-mask of 145928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten * attributes 146928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten */ 1470b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 1484597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten#ifdef USE_DEBUG 149bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_unlock_exclusive_attributes_(IObject *thiz, unsigned attributes, 1504597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten const char *file, int line) 1514597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten#else 152bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_unlock_exclusive_attributes(IObject *thiz, unsigned attributes) 1534597a7427b697df31d0bbf4c2040806d0c27b6e0Glenn Kasten#endif 154e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten{ 155fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten 156fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#ifdef USE_DEBUG 157bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(pthread_equal(pthread_self(), thiz->mOwner)); 158bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(NULL != thiz->mFile); 159bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(0 != thiz->mLine); 160fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#endif 161fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten 162e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten int ok; 1633c170255cc71942f310b676d968cf73328aa5d70Jean-Michel Trivi 1647b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // make SL object IDs be contiguous with XA object IDs 1657b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten SLuint32 objectID = IObjectToObjectID(thiz); 16647550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten SLuint32 index = objectID; 16747550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten if ((XA_OBJECTID_ENGINE <= index) && (index <= XA_OBJECTID_CAMERADEVICE)) { 1687b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten ; 16947550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten } else if ((SL_OBJECTID_ENGINE <= index) && (index <= SL_OBJECTID_METADATAEXTRACTOR)) { 17047550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten index -= SL_OBJECTID_ENGINE - XA_OBJECTID_CAMERADEVICE - 1; 1717b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten } else { 1727b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten assert(false); 17347550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten index = 0; 1743c170255cc71942f310b676d968cf73328aa5d70Jean-Michel Trivi } 1753c170255cc71942f310b676d968cf73328aa5d70Jean-Michel Trivi 1767b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // first synchronously handle updates to attributes here, while object is still locked. 1777b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // This appears to be a loop, but actually typically runs through the loop only once. 1787b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten unsigned asynchronous = attributes; 1797b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten while (attributes) { 1807b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // this sequence is carefully crafted to be O(1); tread carefully when making changes 1817b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten unsigned bit = ctz(attributes); 1827b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // ATTR_INDEX_MAX == next bit position after the last attribute 1837b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten assert(ATTR_INDEX_MAX > bit); 1847b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // compute the entry in the handler table using object ID and bit number 18547550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten AttributeHandler handler = handlerTable[index][bit]; 1867b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten if (NULL != handler) { 1877b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten asynchronous &= ~(*handler)(thiz); 188e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 1897b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten attributes &= ~(1 << bit); 190e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 1914b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 1927b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // any remaining attributes are handled asynchronously in the sync thread 1937b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten if (asynchronous) { 1947b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten unsigned oldAttributesMask = thiz->mAttributesMask; 1957b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten thiz->mAttributesMask = oldAttributesMask | asynchronous; 1967b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten if (oldAttributesMask) { 1977b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten asynchronous = ATTR_NONE; 198d158d31a6bbb06426b71c3d097b7768bc3fb79a3Jean-Michel Trivi } 199d158d31a6bbb06426b71c3d097b7768bc3fb79a3Jean-Michel Trivi } 2004b65ef9efdf5aba01bea89d8cdd64f500560a28dGlenn Kasten 20147550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten#ifdef ANDROID 202a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten // FIXME hack to safely handle a post-unlock PrefetchStatus callback and/or AudioTrack::start() 203a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten slPrefetchCallback prefetchCallback = NULL; 204a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten void *prefetchContext = NULL; 205a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten SLuint32 prefetchEvents = SL_PREFETCHEVENT_NONE; 206ae1a5c8dc1fccf7c121eda830f8d23bd094c0f16Glenn Kasten android::sp<android::AudioTrack> audioTrack; 20747550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten if (SL_OBJECTID_AUDIOPLAYER == objectID) { 20847550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten CAudioPlayer *ap = (CAudioPlayer *) thiz; 209a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten prefetchCallback = ap->mPrefetchStatus.mDeferredPrefetchCallback; 210a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten prefetchContext = ap->mPrefetchStatus.mDeferredPrefetchContext; 211a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten prefetchEvents = ap->mPrefetchStatus.mDeferredPrefetchEvents; 212a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten ap->mPrefetchStatus.mDeferredPrefetchCallback = NULL; 213a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten // clearing these next two fields is not required, but avoids stale data during debugging 214a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten ap->mPrefetchStatus.mDeferredPrefetchContext = NULL; 215a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten ap->mPrefetchStatus.mDeferredPrefetchEvents = SL_PREFETCHEVENT_NONE; 21647550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten if (ap->mDeferredStart) { 21747550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten audioTrack = ap->mAudioTrack; 21847550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten ap->mDeferredStart = false; 21947550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten } 22047550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten } 22147550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten#endif 22247550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten 223fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#ifdef USE_DEBUG 224bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten memset(&thiz->mOwner, 0, sizeof(pthread_t)); 225bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mFile = file; 226bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mLine = line; 227fe96fa06360516c60490c7a697e1148017b4c1b2Glenn Kasten#endif 228bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_mutex_unlock(&thiz->mMutex); 229e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten assert(0 == ok); 2307b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten 23147550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten#ifdef ANDROID 232a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten // FIXME call the prefetch status callback while not holding the mutex on AudioPlayer 233a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten if (NULL != prefetchCallback) { 234a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten // note these are synchronous by the application's thread as it is about to return from API 235a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten assert(prefetchEvents != SL_PREFETCHEVENT_NONE); 236a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten CAudioPlayer *ap = (CAudioPlayer *) thiz; 237a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten // spec requires separate callbacks for each event 238a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten if (SL_PREFETCHEVENT_STATUSCHANGE & prefetchEvents) { 239a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten (*prefetchCallback)(&ap->mPrefetchStatus.mItf, prefetchContext, 240a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten SL_PREFETCHEVENT_STATUSCHANGE); 241a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten } 242a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten if (SL_PREFETCHEVENT_FILLLEVELCHANGE & prefetchEvents) { 243a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten (*prefetchCallback)(&ap->mPrefetchStatus.mItf, prefetchContext, 244a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten SL_PREFETCHEVENT_FILLLEVELCHANGE); 245a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten } 246a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten } 247a60dbf554549d10780f473b6e1373aa07aec3a28Glenn Kasten 24847550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten // call AudioTrack::start() while not holding the mutex on AudioPlayer 24947550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten if (audioTrack != 0) { 25047550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten audioTrack->start(); 25147550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten audioTrack.clear(); 25247550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten } 25347550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten#endif 25447550bf6cf5cf08a402a54b1589f4b64582a5120Glenn Kasten 255f51dba65751107c930759938775b75531ec1f330Glenn Kasten // first update to this interface since previous sync 2567b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten if (ATTR_NONE != asynchronous) { 257bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten unsigned id = thiz->mInstanceID; 258f51dba65751107c930759938775b75531ec1f330Glenn Kasten if (0 != id) { 259f51dba65751107c930759938775b75531ec1f330Glenn Kasten --id; 260f51dba65751107c930759938775b75531ec1f330Glenn Kasten assert(MAX_INSTANCE > id); 261bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten IEngine *thisEngine = &thiz->mEngine->mEngine; 2627b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten // FIXME atomic or here 263f51dba65751107c930759938775b75531ec1f330Glenn Kasten interface_lock_exclusive(thisEngine); 264f51dba65751107c930759938775b75531ec1f330Glenn Kasten thisEngine->mChangedMask |= 1 << id; 265f51dba65751107c930759938775b75531ec1f330Glenn Kasten interface_unlock_exclusive(thisEngine); 266f51dba65751107c930759938775b75531ec1f330Glenn Kasten } 267e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten } 2687b726bdcd996f1cab3a584c04ce1afc07bc8fbe7Glenn Kasten 269e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten} 270e5bf0d2c9531a7064eb3ddcafaf93ac1b0974037Glenn Kasten 2710b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 272928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief Wait on the condition variable associated with the object; see pthread_cond_wait */ 2730b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 2744f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten#ifdef USE_DEBUG 275bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_cond_wait_(IObject *thiz, const char *file, int line) 2764f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten{ 2774f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten // note that this will unlock the mutex, so we have to clear the owner 278bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(pthread_equal(pthread_self(), thiz->mOwner)); 279bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(NULL != thiz->mFile); 280bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten assert(0 != thiz->mLine); 281bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten memset(&thiz->mOwner, 0, sizeof(pthread_t)); 282bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mFile = file; 283bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mLine = line; 2844f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten // alas we don't know the new owner's identity 2854f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten int ok; 286bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_cond_wait(&thiz->mCond, &thiz->mMutex); 2874f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten assert(0 == ok); 2884f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten // restore my ownership 289bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mOwner = pthread_self(); 290bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mFile = file; 291bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten thiz->mLine = line; 2924f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten} 2934f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten#else 294bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_cond_wait(IObject *thiz) 295a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten{ 296a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten int ok; 297bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_cond_wait(&thiz->mCond, &thiz->mMutex); 298a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten assert(0 == ok); 299a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten} 3004f064c143ef2b26347130a49788116b5d2e1252aGlenn Kasten#endif 301a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 3020b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 303928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief Signal the condition variable associated with the object; see pthread_cond_signal */ 3040b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 305bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_cond_signal(IObject *thiz) 306a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten{ 307a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten int ok; 308bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_cond_signal(&thiz->mCond); 309a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten assert(0 == ok); 310a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten} 311a438eb1cf1ae602afab00336528dd230bd929206Glenn Kasten 3120b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 313928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten/** \brief Broadcast the condition variable associated with the object; 314928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten * see pthread_cond_broadcast 315928ea4ffff40c82987cfb1ac9e3095fdc6968709Glenn Kasten */ 3160b595cc18d82e41dfab0c686e9e63c30a86e8c80Glenn Kasten 317bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kastenvoid object_cond_broadcast(IObject *thiz) 318a438eb1cf1ae602afab00336528dd230bd929206Glenn Kasten{ 319a438eb1cf1ae602afab00336528dd230bd929206Glenn Kasten int ok; 320bcc5c7225e3b7a1dbf2e9e830987f69167acf06fGlenn Kasten ok = pthread_cond_broadcast(&thiz->mCond); 321a438eb1cf1ae602afab00336528dd230bd929206Glenn Kasten assert(0 == ok); 322a438eb1cf1ae602afab00336528dd230bd929206Glenn Kasten} 323