1f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams/* 2f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * Copyright (C) 2013 The Android Open Source Project 3f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * 4f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 5f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * you may not use this file except in compliance with the License. 6f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * You may obtain a copy of the License at 7f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * 8f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * http://www.apache.org/licenses/LICENSE-2.0 9f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * 10f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * Unless required by applicable law or agreed to in writing, software 11f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * distributed under the License is distributed on an "AS IS" BASIS, 12f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * See the License for the specific language governing permissions and 14f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams * limitations under the License. 15f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams */ 16f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams 17574854bcb2eb25a85b9b52faf2fb3e743fa7aa14Stephen Hines#include "rsUtils.h" 18f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams#include "rsCppUtils.h" 19f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams 208c1177be9bd7175979e970a066474bc6f258ba48Dan Albert#include <errno.h> 218c1177be9bd7175979e970a066474bc6f258ba48Dan Albert#include <string.h> 222a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang#include <unistd.h> 232abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni 248c1177be9bd7175979e970a066474bc6f258ba48Dan Albert#include <string> 258c1177be9bd7175979e970a066474bc6f258ba48Dan Albert 262fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar#ifndef RS_COMPATIBILITY_LIB 272fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar#include <sys/wait.h> 282fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar#endif 292fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 30f5ffbf2b8c885a4fc7c34812ab33ddb16dc56325Mark Salyzyn 31f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Samsnamespace android { 32f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Samsnamespace renderscript { 33f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams 34f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Samsconst char * rsuCopyString(const char *name) { 35f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams return rsuCopyString(name, strlen(name)); 36f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams} 37f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams 38f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Samsconst char * rsuCopyString(const char *name, size_t len) { 39f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams char *n = new char[len+1]; 40f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams memcpy(n, name, len); 41f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams n[len] = 0; 42f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams return n; 43f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams} 44f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams 452abfcc6d129fe3defddef4540aa95cc445c03a7aYang Niconst char* rsuJoinStrings(int n, const char* const* strs) { 462abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni std::string tmp; 472abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni for (int i = 0; i < n; i++) { 482abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni if (i > 0) { 492abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni tmp.append(" "); 502abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni } 512abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni tmp.append(strs[i]); 522abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni } 532abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni return strndup(tmp.c_str(), tmp.size()); 542abfcc6d129fe3defddef4540aa95cc445c03a7aYang Ni} 55f313dc32d5ea68a7c48fb4ec6e131ec2fb97ce2dJason Sams 562fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar#ifndef RS_COMPATIBILITY_LIB 572fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainarbool rsuExecuteCommand(const char *exe, int nArgs, const char * const *args) { 582fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar std::unique_ptr<const char> joined(rsuJoinStrings(nArgs, args)); 597b29f5a5f75b1a8d830a14c6c5ae9bcb7d0b3ca4Pirama Arumuga Nainar ALOGV("Invoking %s with args '%s'", exe, joined.get()); 602fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 612fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar pid_t pid = fork(); 622fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 632fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar switch (pid) { 642fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar case -1: { // Error occurred (we attempt no recovery) 652fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar ALOGE("Fork of \"%s\" failed with error %s", exe, strerror(errno)); 662fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar return false; 672fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar } 682fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar case 0: { // Child process 697b29f5a5f75b1a8d830a14c6c5ae9bcb7d0b3ca4Pirama Arumuga Nainar // No (direct or indirect) call to malloc between fork and exec. It is 707b29f5a5f75b1a8d830a14c6c5ae9bcb7d0b3ca4Pirama Arumuga Nainar // possible that a different thread holds the heap lock before the fork. 7190ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar 7290ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar // ProcessManager in libcore can reap unclaimed SIGCHLDs in its process 7390ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar // group. To ensure that the exit signal is not caught by 7490ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar // ProcessManager and instead sent to libRS, set the child's PGID to its 7590ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar // PID. 7690ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar setpgid(0, 0); 7790ea8d33a7fd9a64dd68ef7ebccf595b8eb1dd68Pirama Arumuga Nainar 782fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar execv(exe, (char * const *)args); 792fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 802fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar ALOGE("execv() failed: %s", strerror(errno)); 812fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar abort(); 822fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar return false; 832fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar } 842fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar default: { // Parent process (actual driver) 852fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar // Wait on child process to finish execution. 862fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar int status = 0; 872fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar pid_t w = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0)); 882fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar if (w == -1) { 892fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar ALOGE("Waitpid of \"%s\" failed with error %s", exe, 902fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar strerror(errno)); 912fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar return false; 922fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar } 932fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 942fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 952fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar return true; 962fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar } 972fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 982fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar ALOGE("Child process \"%s\" terminated with status %d", exe, status); 992fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar return false; 1002fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar } 1012fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar } 1022fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar} 1032fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar#endif // RS_COMPATIBILITY_LIB 1042fa8a238dd69afebdeb757adcb1d674043d78e32Pirama Arumuga Nainar 1052a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang// Implementation of property_get from libcutils 1062a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wangint property_get(const char *key, char *value, const char *default_value) { 1072a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang int len; 1082a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang len = __system_property_get(key, value); 1092a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang if (len > 0) { 1102a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang return len; 1112a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang } 1122a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang 1132a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang if (default_value) { 1142a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang len = strlen(default_value); 1152a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang memcpy(value, default_value, len + 1); 1162a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang } 1172a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang return len; 1182a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang} 1192a61168a777ee434ce2c28945aa74f6a6bcf2820Miao Wang 1207974fc03e11f3a8dd40f794f3b33b4889483090cRahul Chaudhry} // namespace renderscript 1217974fc03e11f3a8dd40f794f3b33b4889483090cRahul Chaudhry} // namespace android 122