On linux Tcl version of the test just crashes constantly in free, i have
no other OSes here
(gdb) bt
#0 0xb7f0d410 in ?? ()
#1 0xb6cd1b78 in ?? ()
#2 0x00000006 in ?? ()
#3 0x00003746 in ?? ()
#4 0xb7d3f731 in raise () from /lib/libc.so.6
#5 0xb7d40f08 in abort () from /lib/libc.so.6
#6 0xb7d74e7b in __libc_message () from /lib/libc.so.6
#7 0xb7d7ab10 in malloc_printerr () from /lib/libc.so.6
#8 0xb7d7c1a9 in free () from /lib/libc.so.6
#9 0x080485d9 in MemThread (arg=0x0) at ttest.c:33
#10 0xb7e8943f in NewThreadProc (clientData=0x804a358)
at
/home/vlad/src/ossweb/external/archlinux/tcl/src/tcl8.4.14/unix/../generic/tclEvent.c:1229
#11 0xb7d014a2 in start_thread () from /lib/libpthread.so.0
#12 0xb7dd5ede in clone () from /lib/libc.so.6
Zoran Vasiljevic wrote:
On 19.12.2006, at 20:42, Stephen Deasey wrote:
On 12/19/06, Vlad Seryakov <[EMAIL PROTECTED]> wrote:
Right, with Ns_ functions it does not crash.
Zoran will be happy... :-)
Not at all!
So, I would like to know exactly how to reproduce the problem
(what OS, machine, etc).
Furthermore I need all your test-code and eventually the gdb
trace of the crash, to start with.
Can you get all that for me?
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#include <tcl.h>
#include <stdlib.h>
#include <memory.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>
#define MemAlloc malloc
#define MemFree free
static int nbuffer = 16384;
static int nloops = 50000;
static int nthreads = 4;
static void *gPtr = NULL;
static Tcl_Mutex *gLock = NULL;
void MemThread(void *arg)
{
int i,n;
void *ptr = NULL;
for (i = 0; i < nloops; ++i) {
n = 1 + (int) (nbuffer * (rand() / (RAND_MAX + 1.0)));
if (ptr != NULL) {
MemFree(ptr);
}
ptr = MemAlloc(n);
if (n % 50 == 0) {
Tcl_MutexLock(&gLock);
if (gPtr != NULL) {
MemFree(gPtr);
gPtr = NULL;
} else {
gPtr = MemAlloc(n);
}
Tcl_MutexUnlock(&gLock);
}
}
}
int main (int argc, char **argv)
{
int i;
Tcl_ThreadId *tids;
tids = (Tcl_ThreadId *)malloc(sizeof(Tcl_ThreadId) * nthreads);
for (i = 0; i < nthreads; ++i) {
Tcl_CreateThread( &tids[i], MemThread, NULL, TCL_THREAD_STACK_DEFAULT, TCL_THREAD_JOINABLE);
}
for (i = 0; i < nthreads; ++i) {
Tcl_JoinThread(tids[i], NULL);
}
}
