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Polyfill SIGCHLD on the New Technology

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redbean will now cleanup child processes properly. New accounting
information is available too, such as page faults and memory usage. The
way it works is Cosmopolitan Libc samples the process collection on
entry into read() and poll() to see if SIGCHLD needs to be raised.

This change also fixes an issue with chibicc /tmp cleanup. There was
also a regression in MODE=dbg because STL needed ASAN runtime support.
This commit is contained in:
Justine Tunney 2022-03-22 21:04:08 -07:00
parent c23b6ecc31
commit 393ca4be40
18 changed files with 182 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

9
libc/intrin/asan.c
View file

@ -27,6 +27,7 @@
#include "libc/calls/struct/iovec.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/asancodes.h"
#include "libc/intrin/kprintf.h"
#include "libc/log/backtrace.internal.h"
#include "libc/log/internal.h"
@ -1256,6 +1257,14 @@ void *__asan_get_current_fake_stack(void) {
return 0;
}
void __sanitizer_annotate_contiguous_container(long beg, long end, long old_mid,
long new_mid) {
// the c++ stl uses this
// TODO(jart): make me faster
__asan_unpoison(beg, new_mid - beg);
__asan_poison(new_mid, end - new_mid, kAsanHeapOverrun);
}
void __asan_install_malloc_hooks(void) {
HOOK(hook_free, __asan_free);
HOOK(hook_malloc, __asan_malloc);

13
libc/intrin/exit.greg.c
View file

@ -17,20 +17,12 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#define ShouldUseMsabiAttribute() 1
#include "libc/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/dce.h"
#include "libc/nexgen32e/vendor.internal.h"
#include "libc/nt/console.h"
#include "libc/nt/process.h"
#include "libc/nt/runtime.h"
#include "libc/nt/thunk/msabi.h"
#include "libc/runtime/internal.h"
#include "libc/sysv/consts/nr.h"
uint32_t __winmainpid;
const char kConsoleHandles[2] = {kNtStdInputHandle, kNtStdOutputHandle};
/**
* Terminates process, ignoring destructors and atexit() handlers.
*
@ -45,11 +37,6 @@ const char kConsoleHandles[2] = {kNtStdInputHandle, kNtStdOutputHandle};
privileged noinstrument noasan noubsan wontreturn void _Exit(int exitcode) {
int i;
STRACE("_Exit(%d)", exitcode);
if (SupportsWindows() && GetCurrentProcessId() == __winmainpid) {
for (i = 0; i < 2; ++i) {
SetConsoleMode(GetStdHandle(kConsoleHandles[i]), __ntconsolemode[i]);
}
}
if ((!IsWindows() && !IsMetal()) || (IsMetal() && IsGenuineCosmo())) {
asm volatile("syscall"
: /* no outputs */

9
libc/intrin/quick_exit.c
View file

@ -20,11 +20,15 @@
#include "libc/calls/strace.internal.h"
#include "libc/dce.h"
#include "libc/nt/console.h"
#include "libc/nt/process.h"
#include "libc/nt/runtime.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
uint32_t __winmainpid;
const char kConsoleHandles[2] = {kNtStdInputHandle, kNtStdOutputHandle};
/**
* Exits process faster.
*
@ -35,6 +39,11 @@ wontreturn void quick_exit(int exitcode) {
int i;
const uintptr_t *p;
STRACE("quick_exit(%d)", exitcode);
if (SupportsWindows() && GetCurrentProcessId() == __winmainpid) {
for (i = 0; i < 2; ++i) {
SetConsoleMode(GetStdHandle(kConsoleHandles[i]), __ntconsolemode[i]);
}
}
if (weaken(fflush)) {
weaken(fflush)(0);
}