113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
/*
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* Copyright (C) 2012 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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#ifndef __TEST_UTILS_H
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#define __TEST_UTILS_H
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#include <inttypes.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <atomic>
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#include <string>
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#include <regex>
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include "private/ScopeGuard.h"
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struct map_record {
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uintptr_t addr_start;
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uintptr_t addr_end;
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int perms;
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size_t offset;
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dev_t device;
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ino_t inode;
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std::string pathname;
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};
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class Maps {
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public:
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static bool parse_maps(std::vector<map_record>* maps) {
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FILE* fp = fopen("/proc/self/maps", "re");
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if (fp == nullptr) {
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return false;
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}
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auto fp_guard = make_scope_guard([&]() {
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fclose(fp);
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});
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char line[BUFSIZ];
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while (fgets(line, sizeof(line), fp) != nullptr) {
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map_record record;
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uint32_t dev_major, dev_minor;
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int path_offset;
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char prot[5]; // sizeof("rwxp")
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if (sscanf(line, "%" SCNxPTR "-%" SCNxPTR " %4s %" SCNxPTR " %x:%x %lu %n",
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&record.addr_start, &record.addr_end, prot, &record.offset,
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&dev_major, &dev_minor, &record.inode, &path_offset) == 7) {
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record.perms = 0;
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if (prot[0] == 'r') {
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record.perms |= PROT_READ;
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}
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if (prot[1] == 'w') {
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record.perms |= PROT_WRITE;
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}
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if (prot[2] == 'x') {
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record.perms |= PROT_EXEC;
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}
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// TODO: parse shared/private?
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record.device = makedev(dev_major, dev_minor);
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record.pathname = line + path_offset;
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if (!record.pathname.empty() && record.pathname.back() == '\n') {
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record.pathname.pop_back();
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}
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maps->push_back(record);
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}
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}
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return true;
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}
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};
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extern "C" pid_t gettid();
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static inline void WaitUntilThreadSleep(std::atomic<pid_t>& tid) {
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while (tid == 0) {
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usleep(1000);
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}
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std::string filename = android::base::StringPrintf("/proc/%d/stat", tid.load());
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std::regex regex {R"(\s+S\s+)"};
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while (true) {
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std::string content;
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ASSERT_TRUE(android::base::ReadFileToString(filename, &content));
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if (std::regex_search(content, regex)) {
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break;
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}
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usleep(1000);
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}
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}
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#endif
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