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Work towards improving signals and processes

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This commit is contained in:
Justine Tunney 2021-01-27 19:34:02 -08:00
parent de703b182c
commit d7ac16a9ed
96 changed files with 1474 additions and 427 deletions
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17
libc/log/backtrace2.c
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@ -22,6 +22,7 @@
#include "libc/bits/weaken.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/fmt/conv.h"
#include "libc/fmt/fmt.h"
#include "libc/log/backtrace.internal.h"
@ -40,7 +41,7 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
ssize_t got;
intptr_t addr;
size_t i, j, gi;
int rc, pid, pipefds[2];
int ws, pid, pipefds[2];
struct Garbages *garbage;
const struct StackFrame *frame;
const char *debugbin, *p1, *p2, *p3, *addr2line;
@ -73,7 +74,7 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
close(pipefds[0]);
close(pipefds[1]);
execvp(addr2line, argv);
abort();
_exit(127);
}
close(pipefds[1]);
while ((got = read(pipefds[0], buf, kBacktraceBufSize)) > 0) {
@ -99,9 +100,15 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
}
}
close(pipefds[0]);
if (waitpid(pid, &rc, 0) == -1) return -1;
if (WEXITSTATUS(rc) != 0) return -1;
return 0;
while (waitpid(pid, &ws, 0) == -1) {
if (errno == EINTR) continue;
return -1;
}
if (WIFEXITED(ws) && !WEXITSTATUS(ws)) {
return 0;
} else {
return -1;
}
}
static int PrintBacktrace(int fd, const struct StackFrame *bp) {