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287 lines
7.8 KiB
287 lines
7.8 KiB
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <malloc.h>
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#include <string.h>
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#include <pthread.h>
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#include "RenderScript.h"
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#include "rsCppStructs.h"
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#include "rsCppInternal.h"
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#include <dlfcn.h>
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#include <unistd.h>
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using android::RSC::RS;
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using android::RSC::RSError;
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bool RS::gInitialized = false;
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bool RS::usingNative = false;
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pthread_mutex_t RS::gInitMutex = PTHREAD_MUTEX_INITIALIZER;
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dispatchTable* RS::dispatch = nullptr;
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static int gInitError = 0;
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RS::RS() {
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mContext = nullptr;
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mErrorFunc = nullptr;
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mMessageFunc = nullptr;
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mMessageRun = false;
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mInit = false;
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mCurrentError = RS_SUCCESS;
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memset(&mElements, 0, sizeof(mElements));
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memset(&mSamplers, 0, sizeof(mSamplers));
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}
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RS::~RS() {
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if (mInit == true) {
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mMessageRun = false;
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if (mContext) {
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finish();
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RS::dispatch->ContextDeinitToClient(mContext);
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void *res = nullptr;
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pthread_join(mMessageThreadId, &res);
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RS::dispatch->ContextDestroy(mContext);
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mContext = nullptr;
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}
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}
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}
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bool RS::init(const char * name, uint32_t flags) {
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return RS::init(name, flags, 0);
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}
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// This will only open API 19+ libRS, because that's when
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// we changed libRS to extern "C" entry points.
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static bool loadSO(const char* filename, int targetApi) {
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void* handle = dlopen(filename, RTLD_LAZY | RTLD_LOCAL);
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if (handle == nullptr) {
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ALOGV("couldn't dlopen %s, %s", filename, dlerror());
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return false;
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}
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if (loadSymbols(handle, *RS::dispatch, targetApi) == false) {
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ALOGV("%s init failed!", filename);
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return false;
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}
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return true;
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}
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static uint32_t getProp(const char *str) {
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#if !defined(__LP64__) && defined(__ANDROID__)
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char buf[256];
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android::renderscript::property_get(str, buf, "0");
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return atoi(buf);
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#else
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return 0;
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#endif
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}
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bool RS::initDispatch(int targetApi) {
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pthread_mutex_lock(&gInitMutex);
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if (gInitError) {
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goto error;
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} else if (gInitialized) {
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pthread_mutex_unlock(&gInitMutex);
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return true;
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}
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RS::dispatch = new dispatchTable;
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// Attempt to load libRS, load libRSSupport on failure.
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// If property is set, proceed directly to libRSSupport.
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if (getProp("debug.rs.forcecompat") == 0) {
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usingNative = loadSO("libRS.so", targetApi);
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}
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if (usingNative == false) {
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if (loadSO("libRSSupport.so", targetApi) == false) {
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ALOGE("Failed to load libRS.so and libRSSupport.so");
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goto error;
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}
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}
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gInitialized = true;
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pthread_mutex_unlock(&gInitMutex);
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return true;
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error:
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gInitError = 1;
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pthread_mutex_unlock(&gInitMutex);
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return false;
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}
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bool RS::init(const char * name, uint32_t flags, int targetApi) {
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if (mInit) {
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return true;
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}
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// When using default value 0, set targetApi to RS_VERSION,
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// to preserve the behavior of existing apps.
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if (targetApi == 0) {
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targetApi = RS_VERSION;
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}
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if (initDispatch(targetApi) == false) {
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ALOGE("Couldn't initialize dispatch table");
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return false;
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}
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uint32_t nameLen = strlen(name);
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if (nameLen > PATH_MAX) {
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ALOGE("The path to the cache directory is too long");
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return false;
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}
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memcpy(mCacheDir, name, nameLen);
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// Add the null character even if the user does not.
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mCacheDir[nameLen] = 0;
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mCacheDirLen = nameLen + 1;
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RsDevice device = RS::dispatch->DeviceCreate();
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if (device == 0) {
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ALOGE("Device creation failed");
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return false;
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}
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if (flags & ~(RS_CONTEXT_SYNCHRONOUS | RS_CONTEXT_LOW_LATENCY |
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RS_CONTEXT_LOW_POWER | RS_CONTEXT_WAIT_FOR_ATTACH)) {
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ALOGE("Invalid flags passed");
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return false;
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}
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mContext = RS::dispatch->ContextCreate(device, 0, targetApi, RS_CONTEXT_TYPE_NORMAL, flags);
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if (mContext == 0) {
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ALOGE("Context creation failed");
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return false;
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}
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pid_t mNativeMessageThreadId;
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int status = pthread_create(&mMessageThreadId, nullptr, threadProc, this);
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if (status) {
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ALOGE("Failed to start RS message thread.");
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return false;
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}
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// Wait for the message thread to be active.
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while (!mMessageRun) {
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usleep(1000);
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}
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mInit = true;
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return true;
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}
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void RS::throwError(RSError error, const char *errMsg) {
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if (mCurrentError == RS_SUCCESS) {
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mCurrentError = error;
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ALOGE("RS CPP error: %s", errMsg);
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} else {
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ALOGE("RS CPP error (masked by previous error): %s", errMsg);
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}
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}
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RSError RS::getError() {
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return mCurrentError;
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}
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void * RS::threadProc(void *vrsc) {
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RS *rs = static_cast<RS *>(vrsc);
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size_t rbuf_size = 256;
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void * rbuf = malloc(rbuf_size);
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RS::dispatch->ContextInitToClient(rs->mContext);
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rs->mMessageRun = true;
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while (rs->mMessageRun) {
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size_t receiveLen = 0;
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uint32_t usrID = 0;
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uint32_t subID = 0;
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RsMessageToClientType r = RS::dispatch->ContextPeekMessage(rs->mContext,
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&receiveLen, sizeof(receiveLen),
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&usrID, sizeof(usrID));
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if (receiveLen >= rbuf_size) {
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rbuf_size = receiveLen + 32;
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void *tmpBuf = realloc(rbuf, rbuf_size);
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if (tmpBuf) {
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rbuf = tmpBuf;
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} else {
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free(rbuf);
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rbuf = NULL;
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}
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}
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if (!rbuf) {
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ALOGE("RS::message handler realloc error %zu", rbuf_size);
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// No clean way to recover now?
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}
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RS::dispatch->ContextGetMessage(rs->mContext, rbuf, rbuf_size, &receiveLen, sizeof(receiveLen),
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&subID, sizeof(subID));
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switch(r) {
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case RS_MESSAGE_TO_CLIENT_ERROR:
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ALOGE("RS Error %s", (const char *)rbuf);
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rs->throwError(RS_ERROR_RUNTIME_ERROR, "Error returned from runtime");
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if(rs->mMessageFunc != nullptr) {
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rs->mErrorFunc(usrID, (const char *)rbuf);
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}
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break;
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case RS_MESSAGE_TO_CLIENT_NONE:
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case RS_MESSAGE_TO_CLIENT_EXCEPTION:
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case RS_MESSAGE_TO_CLIENT_RESIZE:
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/*
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* Teardown. We want to avoid starving other threads during
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* teardown by yielding until the next line in the destructor can
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* execute to set mRun = false. Note that the FIFO sends an
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* empty NONE message when it reaches its destructor.
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*/
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usleep(1000);
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break;
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case RS_MESSAGE_TO_CLIENT_USER:
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if(rs->mMessageFunc != nullptr) {
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rs->mMessageFunc(usrID, rbuf, receiveLen);
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} else {
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ALOGE("Received a message from the script with no message handler installed.");
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}
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break;
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default:
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ALOGE("RS unknown message type %i", r);
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}
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}
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if (rbuf) {
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free(rbuf);
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}
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ALOGV("RS Message thread exiting.");
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return nullptr;
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}
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void RS::setErrorHandler(ErrorHandlerFunc_t func) {
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mErrorFunc = func;
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}
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void RS::setMessageHandler(MessageHandlerFunc_t func) {
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mMessageFunc = func;
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}
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void RS::finish() {
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RS::dispatch->ContextFinish(mContext);
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}
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