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From: Massimo Dal Zotto <dz@cs.unitn.it>

Browse Source 
> tprintf.patch
>
>       tprintf.patch
>
>       adds functions and macros which implement a conditional trace package
>       with the ability to change flags and numeric options of running
>       backends at runtime.
>       Options/flags can be specified in the command line and/or read from
>       the file pg_options in the data directory.
This commit is contained in:
Marc G. Fournier
1998-08-25 21:34:10 +00:00
parent 51e8e187d1
commit 7414d61950
9 changed files with 430 additions and 188 deletions
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79
src/backend/storage/ipc/ipc.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.30 1998/07/12 04:43:28 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.31 1998/08/25 21:34:01 scrappy Exp $
*
* NOTES
*
@@ -39,6 +39,7 @@
#include <sys/shm.h>
#include "utils/memutils.h"
#include "libpq/libpq.h"
#include "utils/trace.h"
#if defined(solaris_sparc)
#include <string.h>
@@ -113,17 +114,26 @@ proc_exit(int code)
{
int i;
TPRINTF(TRACE_VERBOSE, "proc_exit(%d) [#%d]", code, proc_exit_inprogress);
/*
* If proc_exit is called too many times something bad is
* happenig, so exit immediately.
*/
if (proc_exit_inprogress > 9) {
elog(ERROR, "infinite recursion in proc_exit");
goto exit;
}
/* ----------------
* if proc_exit_inprocess is true, then it means that we
* are being invoked from within an on_exit() handler
* and so we return immediately to avoid recursion.
* ----------------
*/
if (proc_exit_inprogress)
if (proc_exit_inprogress++)
return;
proc_exit_inprogress = 1;
/* do our shared memory exits first */
shmem_exit(code);
@@ -134,6 +144,8 @@ proc_exit(int code)
for (i = on_proc_exit_index - 1; i >= 0; --i)
(*on_proc_exit_list[i].function) (code, on_proc_exit_list[i].arg);
exit:
TPRINTF(TRACE_VERBOSE, "exit(%d)", code);
exit(code);
}
@@ -150,17 +162,27 @@ shmem_exit(int code)
{
int i;
TPRINTF(TRACE_VERBOSE, "shmem_exit(%d) [#%d]",
code, shmem_exit_inprogress);
/*
* If shmem_exit is called too many times something bad is
* happenig, so exit immediately.
*/
if (shmem_exit_inprogress > 9) {
elog(ERROR, "infinite recursion in shmem_exit");
exit(-1);
}
/* ----------------
* if shmem_exit_inprocess is true, then it means that we
* are being invoked from within an on_exit() handler
* and so we return immediately to avoid recursion.
* ----------------
*/
if (shmem_exit_inprogress)
if (shmem_exit_inprogress++)
return;
shmem_exit_inprogress = 1;
/* ----------------
* call all the callbacks registered before calling exit().
* ----------------
@@ -315,7 +337,7 @@ IpcSemaphoreCreate(IpcSemaphoreKey semKey,
{
*status = IpcSemIdNotExist; /* there doesn't exist a semaphore */
#ifdef DEBUG_IPC
fprintf(stderr, "calling semget with %d, %d , %d\n",
EPRINTF("calling semget with %d, %d , %d\n",
semKey,
semNum,
IPC_CREAT | permission);
@@ -324,8 +346,9 @@ IpcSemaphoreCreate(IpcSemaphoreKey semKey,
if (semId < 0)
{
perror("semget");
IpcConfigTip();
EPRINTF("IpcSemaphoreCreate: semget failed (%s) "
"key=%d, num=%d, permission=%o",
strerror(errno), semKey, semNum, permission);
proc_exit(3);
}
for (i = 0; i < semNum; i++)
@@ -334,8 +357,8 @@ IpcSemaphoreCreate(IpcSemaphoreKey semKey,
errStatus = semctl(semId, 0, SETALL, semun);
if (errStatus == -1)
{
perror("semctl");
IpcConfigTip();
EPRINTF("IpcSemaphoreCreate: semctl failed (%s) id=%d",
strerror(errno), semId);
}
if (removeOnExit)
@@ -349,7 +372,7 @@ IpcSemaphoreCreate(IpcSemaphoreKey semKey,
}
#ifdef DEBUG_IPC
fprintf(stderr, "\nIpcSemaphoreCreate, status %d, returns %d\n",
EPRINTF("\nIpcSemaphoreCreate, status %d, returns %d\n",
*status,
semId);
fflush(stdout);
@@ -379,8 +402,8 @@ IpcSemaphoreSet(int semId, int semno, int value)
if (errStatus == -1)
{
perror("semctl");
IpcConfigTip();
EPRINTF("IpcSemaphoreSet: semctl failed (%s) id=%d",
strerror(errno), semId);
}
}
@@ -441,8 +464,8 @@ IpcSemaphoreLock(IpcSemaphoreId semId, int sem, int lock)
if (errStatus == -1)
{
perror("semop");
IpcConfigTip();
EPRINTF("IpcSemaphoreLock: semop failed (%s) id=%d",
strerror(errno), semId);
proc_exit(255);
}
}
@@ -486,8 +509,8 @@ IpcSemaphoreUnlock(IpcSemaphoreId semId, int sem, int lock)
if (errStatus == -1)
{
perror("semop");
IpcConfigTip();
EPRINTF("IpcSemaphoreUnlock: semop failed (%s) id=%d",
strerror(errno), semId);
proc_exit(255);
}
}
@@ -534,10 +557,9 @@ IpcMemoryCreate(IpcMemoryKey memKey, uint32 size, int permission)
if (shmid < 0)
{
fprintf(stderr, "IpcMemoryCreate: memKey=%d , size=%d , permission=%d",
memKey, size, permission);
perror("IpcMemoryCreate: shmget(..., create, ...) failed");
IpcConfigTip();
EPRINTF("IpcMemoryCreate: shmget failed (%s) "
"key=%d, size=%d, permission=%o",
strerror(errno), memKey, size, permission);
return (IpcMemCreationFailed);
}
@@ -560,10 +582,9 @@ IpcMemoryIdGet(IpcMemoryKey memKey, uint32 size)
if (shmid < 0)
{
fprintf(stderr, "IpcMemoryIdGet: memKey=%d , size=%d , permission=%d",
memKey, size, 0);
perror("IpcMemoryIdGet: shmget() failed");
IpcConfigTip();
EPRINTF("IpcMemoryIdGet: shmget failed (%s) "
"key=%d, size=%d, permission=%o",
strerror(errno), memKey, size, 0);
return (IpcMemIdGetFailed);
}
@@ -602,8 +623,8 @@ IpcMemoryAttach(IpcMemoryId memId)
/* if ( *memAddress == -1) { XXX ??? */
if (memAddress == (char *) -1)
{
perror("IpcMemoryAttach: shmat() failed");
IpcConfigTip();
EPRINTF("IpcMemoryAttach: shmat failed (%s) id=%d",
strerror(errno), memId);
return (IpcMemAttachFailed);
}