35a108b911
this change
- makes panic() variadic, doing full printf() formatting -
no more NO_NUM, and no more separate printf() statements
needed to print extra info (or something in hex) before panicing
- unifies panic() - same panic() name and usage for everyone -
vm, kernel and rest have different names/syntax currently
in order to implement their own luxuries, but no longer
- throws out the 1st argument, to make source less noisy.
the panic() in syslib retrieves the server name from the kernel
so it should be clear enough who is panicing; e.g.
panic("sigaction failed: %d", errno);
looks like:
at_wini(73130): panic: sigaction failed: 0
syslib:panic.c: stacktrace: 0x74dc 0x2025 0x100a
- throws out report() - printf() is more convenient and powerful
- harmonizes/fixes the use of panic() - there were a few places
that used printf-style formatting (didn't work) and newlines
(messes up the formatting) in panic()
- throws out a few per-server panic() functions
- cleans up a tie-in of tty with panic()
merging printf() and panic() statements to be done incrementally.
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
#include <stdlib.h>
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#include <signal.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <minix/sysutil.h>
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#include "syslib.h"
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/*===========================================================================*
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* panic *
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*===========================================================================*/
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PUBLIC void panic(const char *fmt, ...)
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{
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/* Something awful has happened. Panics are caused when an internal
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* inconsistency is detected, e.g., a programming error or illegal
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* value of a defined constant.
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*/
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message m;
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endpoint_t me = NONE;
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char name[20];
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void (*suicide)(void);
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static int panicing= 0;
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va_list args;
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if(panicing) return;
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panicing= 1;
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if(sys_whoami(&me, name, sizeof(name)) == OK && me != NONE)
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printf("%s(%d): panic: ", name, me);
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else
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printf("(sys_whoami failed): panic: ");
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if(fmt) {
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va_start(args, fmt);
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vprintf(fmt, args);
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va_end(fmt);
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} else {
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printf("no message\n");
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}
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printf("\n");
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printf("syslib:panic.c: stacktrace: ");
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util_stacktrace();
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/* Try exit */
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_exit(1);
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/* Try to signal ourself */
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abort();
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/* If exiting nicely through PM fails for some reason, try to
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* commit suicide. E.g., message to PM might fail due to deadlock.
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*/
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suicide = (void (*)(void)) -1;
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suicide();
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/* If committing suicide fails for some reason, hang. */
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for(;;) { }
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}
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