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[build] more stacktrace

This commit is contained in:
Timothy Stack 2021-05-24 21:06:14 -07:00
parent db5fd8e0ec
commit 108dc1b77a
1 changed files with 49 additions and 9 deletions
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58
src/base/lnav_log.cc
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@ -47,7 +47,9 @@
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
#endif
#if BACKWARD_HAS_DW == 1
#include "backward-cpp/backward.hpp"
#endif
#include <sys/types.h>
#include <sys/time.h>
@ -90,6 +92,7 @@
#include "opt_util.hh"
#include "lnav_log.hh"
#include "enum_util.hh"
#include "auto_mem.hh"
static const size_t BUFFER_SIZE = 256 * 1024;
static const size_t MAX_LOG_LINE_SIZE = 2048;
@ -372,7 +375,7 @@ void log_msg_extra_complete()
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-result"
static void sigabrt(int sig)
static void sigabrt(int sig, siginfo_t *info, void *ctx)
{
char crash_path[1024], latest_crash_path[1024];
int fd;
@ -416,11 +419,25 @@ static void sigabrt(int sig)
#ifdef HAVE_EXECINFO_H
backtrace_symbols_fd(frames, frame_count, fd);
#endif
#if 0
#if BACKWARD_HAS_DW == 1
{
ucontext_t *uctx = static_cast<ucontext_t *>(ctx);
void *error_addr = nullptr;
#ifdef REG_RIP // x86_64
error_addr = reinterpret_cast<void *>(uctx->uc_mcontext.gregs[REG_RIP]);
#elif defined(REG_EIP) // x86_32
error_addr = reinterpret_cast<void *>(uctx->uc_mcontext.gregs[REG_EIP]);
#endif
backward::StackTrace st;
st.load_here(32);
if (error_addr) {
st.load_from(error_addr, 32, reinterpret_cast<void *>(uctx),
info->si_addr);
} else {
st.load_here(32, reinterpret_cast<void *>(uctx), info->si_addr);
}
backward::TraceResolver tr;
tr.load_stacktrace(st);
@ -528,16 +545,39 @@ static void sigabrt(int sig)
void log_install_handlers()
{
signal(SIGABRT, sigabrt);
signal(SIGSEGV, sigabrt);
signal(SIGBUS, sigabrt);
signal(SIGILL, sigabrt);
signal(SIGFPE, sigabrt);
const size_t stack_size = 8 * 1024 * 1024;
const int sigs[] = {
SIGABRT,
SIGSEGV,
SIGBUS,
SIGILL,
SIGFPE,
};
static auto_mem<void> stack_content;
stack_t ss;
stack_content = malloc(stack_size);
ss.ss_sp = stack_content;
ss.ss_size = stack_size;
ss.ss_flags = 0;
sigaltstack(&ss, nullptr);
for (const auto sig : sigs) {
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_NODEFER | SA_RESETHAND;
sigfillset(&sa.sa_mask);
sigdelset(&sa.sa_mask, sig);
sa.sa_sigaction = sigabrt;
sigaction(sig, &sa, nullptr);
}
}
void log_abort()
{
sigabrt(SIGABRT);
raise(SIGABRT);
_exit(1);
}