Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "rsLocklessFifo.h" |
Jason Sams | 3b9c52a | 2010-10-14 17:48:46 -0700 | [diff] [blame] | 18 | #include "utils/Timers.h" |
| 19 | #include "utils/StopWatch.h" |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 20 | |
| 21 | using namespace android; |
Jason Sams | c1d726c | 2010-03-18 11:39:44 -0700 | [diff] [blame] | 22 | using namespace android::renderscript; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 23 | |
Alex Sakhartchouk | a8bb921 | 2011-08-19 09:43:18 -0700 | [diff] [blame] | 24 | LocklessCommandFifo::LocklessCommandFifo() : mBuffer(0), mInitialized(false) { |
Jason Sams | 5316b9e | 2011-09-13 15:41:01 -0700 | [diff] [blame] | 25 | mTimeoutCallback = NULL; |
| 26 | mTimeoutCallbackData = NULL; |
| 27 | mTimeoutWait = 0; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 28 | } |
| 29 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 30 | LocklessCommandFifo::~LocklessCommandFifo() { |
Alex Sakhartchouk | a8bb921 | 2011-08-19 09:43:18 -0700 | [diff] [blame] | 31 | if (!mInShutdown && mInitialized) { |
Jason Sams | f5b4596 | 2009-08-25 14:49:07 -0700 | [diff] [blame] | 32 | shutdown(); |
| 33 | } |
Alex Sakhartchouk | 1bfccea | 2011-07-13 17:32:05 -0700 | [diff] [blame] | 34 | if (mBuffer) { |
| 35 | free(mBuffer); |
| 36 | } |
Jason Sams | f5b4596 | 2009-08-25 14:49:07 -0700 | [diff] [blame] | 37 | } |
| 38 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 39 | void LocklessCommandFifo::shutdown() { |
Jason Sams | f5b4596 | 2009-08-25 14:49:07 -0700 | [diff] [blame] | 40 | mInShutdown = true; |
| 41 | mSignalToWorker.set(); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 42 | } |
| 43 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 44 | bool LocklessCommandFifo::init(uint32_t sizeInBytes) { |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 45 | // Add room for a buffer reset command |
| 46 | mBuffer = static_cast<uint8_t *>(malloc(sizeInBytes + 4)); |
| 47 | if (!mBuffer) { |
| 48 | LOGE("LocklessFifo allocation failure"); |
| 49 | return false; |
| 50 | } |
| 51 | |
Jason Sams | 5f7fc27 | 2009-06-18 16:58:42 -0700 | [diff] [blame] | 52 | if (!mSignalToControl.init() || !mSignalToWorker.init()) { |
| 53 | LOGE("Signal setup failed"); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 54 | free(mBuffer); |
| 55 | return false; |
| 56 | } |
| 57 | |
Jason Sams | f5b4596 | 2009-08-25 14:49:07 -0700 | [diff] [blame] | 58 | mInShutdown = false; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 59 | mSize = sizeInBytes; |
| 60 | mPut = mBuffer; |
| 61 | mGet = mBuffer; |
| 62 | mEnd = mBuffer + (sizeInBytes) - 1; |
Jason Sams | 3bc47d4 | 2009-11-12 15:10:25 -0800 | [diff] [blame] | 63 | //dumpState("init"); |
Alex Sakhartchouk | a8bb921 | 2011-08-19 09:43:18 -0700 | [diff] [blame] | 64 | mInitialized = true; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 65 | return true; |
| 66 | } |
| 67 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 68 | uint32_t LocklessCommandFifo::getFreeSpace() const { |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 69 | int32_t freeSpace = 0; |
| 70 | //dumpState("getFreeSpace"); |
| 71 | |
| 72 | if (mPut >= mGet) { |
| 73 | freeSpace = mEnd - mPut; |
| 74 | } else { |
| 75 | freeSpace = mGet - mPut; |
| 76 | } |
| 77 | |
| 78 | if (freeSpace < 0) { |
| 79 | freeSpace = 0; |
| 80 | } |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 81 | return freeSpace; |
| 82 | } |
| 83 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 84 | bool LocklessCommandFifo::isEmpty() const { |
Jason Sams | fcecc24 | 2011-01-24 17:33:21 -0800 | [diff] [blame] | 85 | uint32_t p = android_atomic_acquire_load((int32_t *)&mPut); |
| 86 | return ((uint8_t *)p) == mGet; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 90 | void * LocklessCommandFifo::reserve(uint32_t sizeInBytes) { |
Jason Sams | e2ae85f | 2009-06-03 16:04:54 -0700 | [diff] [blame] | 91 | // Add space for command header and loop token; |
| 92 | sizeInBytes += 8; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 93 | |
| 94 | //dumpState("reserve"); |
| 95 | if (getFreeSpace() < sizeInBytes) { |
| 96 | makeSpace(sizeInBytes); |
| 97 | } |
| 98 | |
| 99 | return mPut + 4; |
| 100 | } |
| 101 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 102 | void LocklessCommandFifo::commit(uint32_t command, uint32_t sizeInBytes) { |
Jason Sams | 516c319 | 2009-10-06 13:58:47 -0700 | [diff] [blame] | 103 | if (mInShutdown) { |
| 104 | return; |
| 105 | } |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 106 | //dumpState("commit 1"); |
| 107 | reinterpret_cast<uint16_t *>(mPut)[0] = command; |
| 108 | reinterpret_cast<uint16_t *>(mPut)[1] = sizeInBytes; |
Jason Sams | 5012a8f | 2011-01-27 18:07:06 -0800 | [diff] [blame] | 109 | |
| 110 | int32_t s = ((sizeInBytes + 3) & ~3) + 4; |
| 111 | android_atomic_add(s, (int32_t *)&mPut); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 112 | //dumpState("commit 2"); |
Jason Sams | 5f7fc27 | 2009-06-18 16:58:42 -0700 | [diff] [blame] | 113 | mSignalToWorker.set(); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 114 | } |
| 115 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 116 | void LocklessCommandFifo::commitSync(uint32_t command, uint32_t sizeInBytes) { |
Jason Sams | 516c319 | 2009-10-06 13:58:47 -0700 | [diff] [blame] | 117 | if (mInShutdown) { |
| 118 | return; |
| 119 | } |
Jason Sams | 3b9c52a | 2010-10-14 17:48:46 -0700 | [diff] [blame] | 120 | |
| 121 | //char buf[1024]; |
| 122 | //sprintf(buf, "RenderScript LocklessCommandFifo::commitSync %p %i %i", this, command, sizeInBytes); |
| 123 | //StopWatch compileTimer(buf); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 124 | commit(command, sizeInBytes); |
| 125 | flush(); |
| 126 | } |
| 127 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 128 | void LocklessCommandFifo::flush() { |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 129 | //dumpState("flush 1"); |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 130 | while (mPut != mGet) { |
Jason Sams | 5316b9e | 2011-09-13 15:41:01 -0700 | [diff] [blame] | 131 | while (!mSignalToControl.wait(mTimeoutWait)) { |
| 132 | if (mTimeoutCallback) { |
| 133 | mTimeoutCallback(mTimeoutCallbackData); |
| 134 | } |
| 135 | } |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 136 | } |
| 137 | //dumpState("flush 2"); |
| 138 | } |
| 139 | |
Jason Sams | 5316b9e | 2011-09-13 15:41:01 -0700 | [diff] [blame] | 140 | void LocklessCommandFifo::setTimoutCallback(void (*cbk)(void *), void *data, uint64_t timeout) { |
| 141 | mTimeoutCallback = cbk; |
| 142 | mTimeoutCallbackData = data; |
| 143 | mTimeoutWait = timeout; |
| 144 | } |
| 145 | |
Jason Sams | bfc7891 | 2011-08-12 15:05:15 -0700 | [diff] [blame] | 146 | bool LocklessCommandFifo::wait(uint64_t timeout) { |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 147 | while (isEmpty() && !mInShutdown) { |
Jason Sams | c1d726c | 2010-03-18 11:39:44 -0700 | [diff] [blame] | 148 | mSignalToControl.set(); |
Jason Sams | bfc7891 | 2011-08-12 15:05:15 -0700 | [diff] [blame] | 149 | return mSignalToWorker.wait(timeout); |
Jason Sams | c1d726c | 2010-03-18 11:39:44 -0700 | [diff] [blame] | 150 | } |
Jason Sams | bfc7891 | 2011-08-12 15:05:15 -0700 | [diff] [blame] | 151 | return true; |
Jason Sams | c1d726c | 2010-03-18 11:39:44 -0700 | [diff] [blame] | 152 | } |
| 153 | |
Jason Sams | bfc7891 | 2011-08-12 15:05:15 -0700 | [diff] [blame] | 154 | const void * LocklessCommandFifo::get(uint32_t *command, uint32_t *bytesData, uint64_t timeout) { |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 155 | while (1) { |
Jason Sams | 5f7fc27 | 2009-06-18 16:58:42 -0700 | [diff] [blame] | 156 | //dumpState("get"); |
Jason Sams | bfc7891 | 2011-08-12 15:05:15 -0700 | [diff] [blame] | 157 | wait(timeout); |
| 158 | |
| 159 | if (isEmpty() || mInShutdown) { |
Jason Sams | a9e7a05 | 2009-09-25 14:51:22 -0700 | [diff] [blame] | 160 | *command = 0; |
| 161 | *bytesData = 0; |
Jason Sams | bfc7891 | 2011-08-12 15:05:15 -0700 | [diff] [blame] | 162 | return NULL; |
Jason Sams | a9e7a05 | 2009-09-25 14:51:22 -0700 | [diff] [blame] | 163 | } |
| 164 | |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 165 | *command = reinterpret_cast<const uint16_t *>(mGet)[0]; |
| 166 | *bytesData = reinterpret_cast<const uint16_t *>(mGet)[1]; |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 167 | if (*command) { |
| 168 | // non-zero command is valid |
| 169 | return mGet+4; |
| 170 | } |
Jason Sams | f5b4596 | 2009-08-25 14:49:07 -0700 | [diff] [blame] | 171 | |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 172 | // zero command means reset to beginning. |
| 173 | mGet = mBuffer; |
| 174 | } |
| 175 | } |
| 176 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 177 | void LocklessCommandFifo::next() { |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 178 | uint32_t bytes = reinterpret_cast<const uint16_t *>(mGet)[1]; |
Jason Sams | fcecc24 | 2011-01-24 17:33:21 -0800 | [diff] [blame] | 179 | |
| 180 | android_atomic_add(((bytes + 3) & ~3) + 4, (int32_t *)&mGet); |
| 181 | //mGet += ((bytes + 3) & ~3) + 4; |
Jason Sams | 5f7fc27 | 2009-06-18 16:58:42 -0700 | [diff] [blame] | 182 | if (isEmpty()) { |
| 183 | mSignalToControl.set(); |
| 184 | } |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 185 | //dumpState("next"); |
| 186 | } |
| 187 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 188 | bool LocklessCommandFifo::makeSpaceNonBlocking(uint32_t bytes) { |
Jason Sams | d0cb106 | 2010-08-18 12:38:03 -0700 | [diff] [blame] | 189 | //dumpState("make space non-blocking"); |
| 190 | if ((mPut+bytes) > mEnd) { |
| 191 | // Need to loop regardless of where get is. |
Bryan Mawhinney | 8ea061b | 2010-12-05 17:21:07 +0000 | [diff] [blame] | 192 | if ((mGet > mPut) || (mBuffer+4 >= mGet)) { |
Jason Sams | d0cb106 | 2010-08-18 12:38:03 -0700 | [diff] [blame] | 193 | return false; |
| 194 | } |
| 195 | |
| 196 | // Toss in a reset then the normal wait for space will do the rest. |
| 197 | reinterpret_cast<uint16_t *>(mPut)[0] = 0; |
| 198 | reinterpret_cast<uint16_t *>(mPut)[1] = 0; |
| 199 | mPut = mBuffer; |
| 200 | mSignalToWorker.set(); |
| 201 | } |
| 202 | |
| 203 | // it will fit here so we just need to wait for space. |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 204 | if (getFreeSpace() < bytes) { |
Jason Sams | d0cb106 | 2010-08-18 12:38:03 -0700 | [diff] [blame] | 205 | return false; |
| 206 | } |
| 207 | |
| 208 | return true; |
| 209 | } |
| 210 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 211 | void LocklessCommandFifo::makeSpace(uint32_t bytes) { |
Jason Sams | e2ae85f | 2009-06-03 16:04:54 -0700 | [diff] [blame] | 212 | //dumpState("make space"); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 213 | if ((mPut+bytes) > mEnd) { |
| 214 | // Need to loop regardless of where get is. |
Bryan Mawhinney | 8ea061b | 2010-12-05 17:21:07 +0000 | [diff] [blame] | 215 | while ((mGet > mPut) || (mBuffer+4 >= mGet)) { |
Jason Sams | e60446b | 2009-09-24 14:55:38 -0700 | [diff] [blame] | 216 | usleep(100); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | // Toss in a reset then the normal wait for space will do the rest. |
| 220 | reinterpret_cast<uint16_t *>(mPut)[0] = 0; |
| 221 | reinterpret_cast<uint16_t *>(mPut)[1] = 0; |
Jason Sams | e2ae85f | 2009-06-03 16:04:54 -0700 | [diff] [blame] | 222 | mPut = mBuffer; |
Jason Sams | d0cb106 | 2010-08-18 12:38:03 -0700 | [diff] [blame] | 223 | mSignalToWorker.set(); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | // it will fit here so we just need to wait for space. |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 227 | while (getFreeSpace() < bytes) { |
Jason Sams | e60446b | 2009-09-24 14:55:38 -0700 | [diff] [blame] | 228 | usleep(100); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 229 | } |
Jason Sams | f5b4596 | 2009-08-25 14:49:07 -0700 | [diff] [blame] | 230 | |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 231 | } |
| 232 | |
Alex Sakhartchouk | ed9f210 | 2010-11-09 17:00:54 -0800 | [diff] [blame] | 233 | void LocklessCommandFifo::dumpState(const char *s) const { |
Jason Sams | d0cb106 | 2010-08-18 12:38:03 -0700 | [diff] [blame] | 234 | LOGV("%s %p put %p, get %p, buf %p, end %p", s, this, mPut, mGet, mBuffer, mEnd); |
Jason Sams | d19f10d | 2009-05-22 14:03:28 -0700 | [diff] [blame] | 235 | } |
Jason Sams | d1ac981 | 2011-01-18 18:12:26 -0800 | [diff] [blame] | 236 | |
| 237 | void LocklessCommandFifo::printDebugData() const { |
| 238 | dumpState("printing fifo debug"); |
| 239 | const uint32_t *pptr = (const uint32_t *)mGet; |
| 240 | pptr -= 8 * 4; |
| 241 | if (mGet < mBuffer) { |
| 242 | pptr = (const uint32_t *)mBuffer; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | for (int ct=0; ct < 16; ct++) { |
| 247 | LOGV("fifo %p = 0x%08x 0x%08x 0x%08x 0x%08x", pptr, pptr[0], pptr[1], pptr[2], pptr[3]); |
| 248 | pptr += 4; |
| 249 | } |
| 250 | |
| 251 | } |