forked from OSchip/llvm-project
[TSan] Kill tsan_symbolize_addr2line_linux.cc
llvm-svn: 201219
This commit is contained in:
Alexey Samsonov
parent
7304b4201f
commit
ce9c449a4d
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@ -53,8 +53,7 @@ if(APPLE)
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elseif(UNIX)
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# Assume Linux
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list(APPEND TSAN_SOURCES
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rtl/tsan_platform_linux.cc
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rtl/tsan_symbolize_addr2line_linux.cc)
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rtl/tsan_platform_linux.cc)
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endif()
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set(TSAN_RUNTIME_LIBRARIES)
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@ -105,8 +105,6 @@ ReportStack *SymbolizeCode(uptr addr) {
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ent->col = col;
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return ent;
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}
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if (!Symbolizer::Get()->CanReturnFileLineInfo())
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return SymbolizeCodeAddr2Line(addr);
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static const uptr kMaxAddrFrames = 16;
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InternalScopedBuffer<AddressInfo> addr_frames(kMaxAddrFrames);
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for (uptr i = 0; i < kMaxAddrFrames; i++)
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@ -24,8 +24,6 @@ ReportStack *SymbolizeCode(uptr addr);
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ReportLocation *SymbolizeData(uptr addr);
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void SymbolizeFlush();
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ReportStack *SymbolizeCodeAddr2Line(uptr addr);
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ReportStack *NewReportStackEntry(uptr addr);
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} // namespace __tsan
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@ -1,198 +0,0 @@
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//===-- tsan_symbolize_addr2line.cc ---------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_libc.h"
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#include "tsan_symbolize.h"
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#include "tsan_mman.h"
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#include "tsan_rtl.h"
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#include "tsan_platform.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <link.h>
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#include <linux/limits.h>
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#include <sys/types.h>
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namespace __tsan {
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void EnterSymbolizer();
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void ExitSymbolizer();
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struct ModuleDesc {
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const char *fullname;
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const char *name;
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uptr base;
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int inp_fd;
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int out_fd;
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};
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struct SectionDesc {
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SectionDesc *next;
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ModuleDesc *module;
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uptr base;
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uptr end;
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};
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struct DlIteratePhdrCtx {
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SectionDesc *sections;
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bool is_first;
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};
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static void NOINLINE InitModule(ModuleDesc *m) {
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EnterSymbolizer();
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int outfd[2] = {};
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if (pipe(&outfd[0])) {
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Printf("ThreadSanitizer: outfd pipe() failed (%d)\n", errno);
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Die();
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}
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int infd[2] = {};
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if (pipe(&infd[0])) {
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Printf("ThreadSanitizer: infd pipe() failed (%d)\n", errno);
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Die();
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}
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int pid = fork();
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if (pid == 0) {
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internal_close(STDOUT_FILENO);
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internal_close(STDIN_FILENO);
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internal_dup2(outfd[0], STDIN_FILENO);
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internal_dup2(infd[1], STDOUT_FILENO);
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internal_close(outfd[0]);
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internal_close(outfd[1]);
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internal_close(infd[0]);
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internal_close(infd[1]);
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for (int fd = getdtablesize(); fd > 2; fd--)
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internal_close(fd);
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execl("/usr/bin/addr2line", "/usr/bin/addr2line", "-Cfe", m->fullname, 0);
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_exit(0);
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} else if (pid < 0) {
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Printf("ThreadSanitizer: failed to fork symbolizer\n");
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Die();
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}
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internal_close(outfd[0]);
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internal_close(infd[1]);
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m->inp_fd = infd[0];
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m->out_fd = outfd[1];
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ExitSymbolizer();
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}
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static int dl_iterate_phdr_cb(dl_phdr_info *info, size_t size, void *arg) {
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DlIteratePhdrCtx *ctx = (DlIteratePhdrCtx*)arg;
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InternalScopedBuffer<char> tmp(128);
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if (ctx->is_first) {
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internal_snprintf(tmp.data(), tmp.size(), "/proc/%d/exe",
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(int)internal_getpid());
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info->dlpi_name = tmp.data();
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}
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ctx->is_first = false;
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if (info->dlpi_name == 0 || info->dlpi_name[0] == 0)
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return 0;
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ModuleDesc *m = (ModuleDesc*)internal_alloc(MBlockReportStack,
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sizeof(ModuleDesc));
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m->fullname = internal_strdup(info->dlpi_name);
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m->name = internal_strrchr(m->fullname, '/');
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if (m->name)
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m->name += 1;
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else
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m->name = m->fullname;
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m->base = (uptr)info->dlpi_addr;
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m->inp_fd = -1;
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m->out_fd = -1;
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DPrintf2("Module %s %zx\n", m->name, m->base);
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for (int i = 0; i < info->dlpi_phnum; i++) {
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const Elf64_Phdr *s = &info->dlpi_phdr[i];
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DPrintf2(" Section p_type=%zx p_offset=%zx p_vaddr=%zx p_paddr=%zx"
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" p_filesz=%zx p_memsz=%zx p_flags=%zx p_align=%zx\n",
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(uptr)s->p_type, (uptr)s->p_offset, (uptr)s->p_vaddr,
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(uptr)s->p_paddr, (uptr)s->p_filesz, (uptr)s->p_memsz,
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(uptr)s->p_flags, (uptr)s->p_align);
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if (s->p_type != PT_LOAD)
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continue;
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SectionDesc *sec = (SectionDesc*)internal_alloc(MBlockReportStack,
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sizeof(SectionDesc));
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sec->module = m;
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sec->base = info->dlpi_addr + s->p_vaddr;
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sec->end = sec->base + s->p_memsz;
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sec->next = ctx->sections;
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ctx->sections = sec;
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DPrintf2(" Section %zx-%zx\n", sec->base, sec->end);
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}
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return 0;
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}
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static SectionDesc *InitSections() {
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DlIteratePhdrCtx ctx = {0, true};
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dl_iterate_phdr(dl_iterate_phdr_cb, &ctx);
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return ctx.sections;
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}
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static SectionDesc *GetSectionDesc(uptr addr) {
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static SectionDesc *sections = 0;
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if (sections == 0)
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sections = InitSections();
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for (SectionDesc *s = sections; s; s = s->next) {
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if (addr >= s->base && addr < s->end) {
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if (s->module->inp_fd == -1)
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InitModule(s->module);
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return s;
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}
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}
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return 0;
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}
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ReportStack *SymbolizeCodeAddr2Line(uptr addr) {
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SectionDesc *s = GetSectionDesc(addr);
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if (s == 0)
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return NewReportStackEntry(addr);
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ModuleDesc *m = s->module;
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uptr offset = addr - m->base;
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char addrstr[32];
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internal_snprintf(addrstr, sizeof(addrstr), "%p\n", (void*)offset);
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if (0 >= internal_write(m->out_fd, addrstr, internal_strlen(addrstr))) {
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Printf("ThreadSanitizer: can't write from symbolizer (%d, %d)\n",
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m->out_fd, errno);
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Die();
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}
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InternalScopedBuffer<char> func(1024);
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ssize_t len = internal_read(m->inp_fd, func.data(), func.size() - 1);
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if (len <= 0) {
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Printf("ThreadSanitizer: can't read from symbolizer (%d, %d)\n",
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m->inp_fd, errno);
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Die();
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}
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func.data()[len] = 0;
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ReportStack *res = NewReportStackEntry(addr);
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res->module = internal_strdup(m->name);
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res->offset = offset;
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char *pos = (char*)internal_strchr(func.data(), '\n');
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if (pos && func[0] != '?') {
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res->func = (char*)internal_alloc(MBlockReportStack, pos - func.data() + 1);
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internal_memcpy(res->func, func.data(), pos - func.data());
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res->func[pos - func.data()] = 0;
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char *pos2 = (char*)internal_strchr(pos, ':');
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if (pos2) {
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res->file = (char*)internal_alloc(MBlockReportStack, pos2 - pos - 1 + 1);
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internal_memcpy(res->file, pos + 1, pos2 - pos - 1);
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res->file[pos2 - pos - 1] = 0;
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res->line = atoi(pos2 + 1);
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}
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}
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return res;
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}
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ReportStack *SymbolizeDataAddr2Line(uptr addr) {
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return 0;
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}
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} // namespace __tsan
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