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(do_pth_event_free): The events are hold in a ring

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buffer.  Adjust for that.
(do_pth_event_body): Ditto.
(pth_event_isolate): Ditto.
(do_pth_wait): Ditto.
(_pth_event_count): Renamed to ..
(event_count): .. and adjusted as above.
(pth_init): Define 3 debug levels and change all debug calls to
make use of them.  This makes the moule now silent.
This commit is contained in:
Werner Koch 2004-12-20 11:36:46 +00:00
parent 18fd4964f6
commit f105ceb39c
2 changed files with 169 additions and 101 deletions
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12
jnlib/ChangeLog
View File

@ -1,3 +1,15 @@
2004-12-20 Werner Koch <wk@g10code.com>
* w32-pth.c (do_pth_event_free): The events are hold in a ring
buffer. Adjust for that.
(do_pth_event_body): Ditto.
(pth_event_isolate): Ditto.
(do_pth_wait): Ditto.
(_pth_event_count): Renamed to ..
(event_count): .. and adjusted as above.
(pth_init): Define 3 debug levels and change all debug calls to
make use of them. This makes the moule now silent.
2004-12-19 Werner Koch <wk@g10code.com>
* w32-pth.c (pth_init): Enable debugging depending on env var.

126
jnlib/w32-pth.c
View File

@ -40,8 +40,6 @@
#define W32_PTH_HANDLE_INTERNAL HANDLE
#include "w32-pth.h"
#define DEBUG_ENTER_LEAVE 1 /* Set to 1 to enable full debugging. */
#ifndef FALSE
#define FALSE 0
@ -54,11 +52,14 @@
#endif
/* States whether trhis module has been initialized. */
/* States whether this module has been initialized. */
static int pth_initialized;
/* Controls whether debugging is enabled. */
static int debug_enter_leave;
/* Keeps the current debug level. Define marcos to test them. */
static int debug_level;
#define DBG_ERROR (debug_level >= 1)
#define DBG_INFO (debug_level >= 2)
#define DBG_CALLS (debug_level >= 3)
/* Variables to support event handling. */
static int pth_signo;
@ -67,7 +68,7 @@ static HANDLE pth_signo_ev;
/* Mutex to make sure only one thread is running. */
static CRITICAL_SECTION pth_shd;
/* Events are store in a double linked event ring. */
struct pth_event_s
{
struct pth_event_s * next;
@ -124,12 +125,14 @@ pth_init (void)
{
SECURITY_ATTRIBUTES sa;
WSADATA wsadat;
const char *s;
if (pth_initialized)
return TRUE;
debug_level = (s=getenv ("DEBUG_PTH"))? atoi (s):0;
if (debug_level)
fprintf (stderr, "%s: pth_init: called.\n", log_get_prefix (NULL));
debug_enter_leave = !!getenv ("DEBUG_PTH");
if (WSAStartup (0x202, &wsadat))
return FALSE;
@ -184,7 +187,7 @@ enter_pth (const char *function)
{
/* Fixme: I am not sure whether the same thread my enter a critical
section twice. */
if (debug_enter_leave)
if (DBG_CALLS)
fprintf (stderr, "%s: enter_pth (%s)\n",
log_get_prefix (NULL), function? function:"");
LeaveCriticalSection (&pth_shd);
@ -195,7 +198,7 @@ static void
leave_pth (const char *function)
{
EnterCriticalSection (&pth_shd);
if (debug_enter_leave)
if (DBG_CALLS)
fprintf (stderr, "%s: leave_pth (%s)\n",
log_get_prefix (NULL), function? function:"");
}
@ -262,6 +265,7 @@ pth_read (int fd, void * buffer, size_t size)
{
char strerr[256];
if (DBG_ERROR)
fprintf (stderr, "%s: pth_read(%d) failed read from file: %s\n",
log_get_prefix (NULL), fd,
w32_strerror (strerr, sizeof strerr));
@ -302,6 +306,7 @@ pth_write (int fd, const void * buffer, size_t size)
n = WriteFile ((HANDLE)fd, buffer, size, &nwrite, NULL);
if (!n)
{
if (DBG_ERROR)
fprintf (stderr, "%s: pth_write(%d) failed in write: %s\n",
log_get_prefix (NULL), fd,
w32_strerror (strerr, sizeof strerr));
@ -395,21 +400,21 @@ pth_accept_ev (int fd, struct sockaddr *addr, int *addrlen,
(WSAGetLastError () == WSAEINPROGRESS ||
WSAGetLastError () == WSAEWOULDBLOCK))
{
if (ev == NULL)
if (!ev)
{
ev = do_pth_event (PTH_EVENT_FD|PTH_UNTIL_FD_READABLE|
PTH_MODE_STATIC, &ev_key, fd);
if (ev == NULL)
if (!ev)
{
leave_pth (__FUNCTION__);
return -1;
}
if (ev_extra != NULL)
if (ev_extra)
pth_event_concat (ev, ev_extra, NULL);
}
/* Wait until accept has a chance. */
do_pth_wait (ev);
if (ev_extra != NULL)
if (ev_extra)
{
pth_event_isolate (ev);
if (do_pth_event_status (ev) != PTH_STATUS_OCCURRED)
@ -452,6 +457,7 @@ pth_mutex_release (pth_mutex_t *mutex)
{
char strerr[256];
if (DBG_ERROR)
fprintf (stderr, "%s: pth_release_mutex %p failed: %s\n",
log_get_prefix (NULL), *mutex,
w32_strerror (strerr, sizeof strerr));
@ -483,6 +489,7 @@ pth_mutex_acquire (pth_mutex_t *mutex, int tryonly, pth_event_t ev_extra)
{
char strerr[256];
if (DBG_ERROR)
fprintf (stderr, "%s: pth_mutex_acquire for %p failed: %s\n",
log_get_prefix (NULL), *mutex,
w32_strerror (strerr, sizeof strerr));
@ -495,6 +502,7 @@ pth_mutex_acquire (pth_mutex_t *mutex, int tryonly, pth_event_t ev_extra)
break;
default:
if (DBG_ERROR)
fprintf (stderr, "%s: WaitForSingleObject returned unexpected "
"code %d for mutex %p\n",
log_get_prefix (NULL), code, *mutex);
@ -576,6 +584,7 @@ pth_attr_set (pth_attr_t hd, int field, ...)
if (val)
{
hd->flags |= PTH_ATTR_JOINABLE;
if (DBG_INFO)
fprintf (stderr, "%s: pth_attr_set: PTH_ATTR_JOINABLE\n",
log_get_prefix (NULL));
}
@ -587,6 +596,7 @@ pth_attr_set (pth_attr_t hd, int field, ...)
{
hd->flags |= PTH_ATTR_STACK_SIZE;
hd->stack_size = val;
if (DBG_INFO)
fprintf (stderr, "%s: pth_attr_set: PTH_ATTR_STACK_SIZE %d\n",
log_get_prefix (NULL), val);
}
@ -602,6 +612,7 @@ pth_attr_set (pth_attr_t hd, int field, ...)
if (!hd->name)
return FALSE;
hd->flags |= PTH_ATTR_NAME;
if (DBG_INFO)
fprintf (stderr, "%s: pth_attr_set: PTH_ATTR_NAME %s\n",
log_get_prefix (NULL), hd->name);
}
@ -647,12 +658,14 @@ do_pth_spawn (pth_attr_t hd, void *(*func)(void *), void *arg)
FIXME: We should no use th W32's Thread handle directly but keep
our own thread control structure. CTX may be used for that. */
if (DBG_INFO)
fprintf (stderr, "%s: do_pth_spawn creating thread ...\n",
log_get_prefix (NULL));
th = CreateThread (&sa, hd->stack_size,
(LPTHREAD_START_ROUTINE)launch_thread,
ctx, CREATE_SUSPENDED, &tid);
ctx->th = th;
if (DBG_INFO)
fprintf (stderr, "%s: do_pth_spawn created thread %p\n",
log_get_prefix (NULL),th);
if (!th)
@ -787,6 +800,7 @@ sig_handler (DWORD signo)
case CTRL_BREAK_EVENT: pth_signo = SIGTERM; break;
}
SetEvent (pth_signo_ev);
if (DBG_INFO)
fprintf (stderr, "%s: sig_handler=%d\n", log_get_prefix (NULL), pth_signo);
return TRUE;
}
@ -799,6 +813,7 @@ do_pth_event_body (unsigned long spec, va_list arg)
pth_event_t ev;
int rc;
if (DBG_INFO)
fprintf (stderr, "%s: pth_event spec=%lu\n", log_get_prefix (NULL), spec);
ev = calloc (1, sizeof *ev);
if (!ev)
@ -811,6 +826,7 @@ do_pth_event_body (unsigned long spec, va_list arg)
ev->u_type = PTH_EVENT_SIGS;
ev->val = va_arg (arg, int *);
rc = SetConsoleCtrlHandler (sig_handler, TRUE);
if (DBG_INFO)
fprintf (stderr, "%s: pth_event: sigs rc=%d\n",
log_get_prefix (NULL), rc);
}
@ -823,6 +839,7 @@ do_pth_event_body (unsigned long spec, va_list arg)
ev->u_type = PTH_EVENT_FD;
va_arg (arg, pth_key_t);
ev->u.fd = va_arg (arg, int);
if (DBG_INFO)
fprintf (stderr, "%s: pth_event: fd=%d\n",
log_get_prefix (NULL), ev->u.fd);
}
@ -854,6 +871,8 @@ do_pth_event_body (unsigned long spec, va_list arg)
free (ev);
return NULL;
}
ev->next = ev;
ev->prev = ev;
return ev;
}
@ -938,6 +957,7 @@ wait_for_fd (int fd, int is_read, int nwait)
while (1)
{
n = select (fd+1, &r, &w, NULL, &tv);
if (DBG_INFO)
fprintf (stderr, "%s: wait_for_fd=%d fd %d (ec=%d)\n",
log_get_prefix (NULL), n, fd,(int)WSAGetLastError ());
if (n == -1)
@ -1036,6 +1056,7 @@ do_pth_event_occurred (pth_event_t ev)
if (sigpresent (ev->u.sig, pth_signo) &&
WaitForSingleObject (pth_signo_ev, 0) == WAIT_OBJECT_0)
{
if (DBG_INFO)
fprintf (stderr, "%s: pth_event_occurred: sig signaled.\n",
log_get_prefix (NULL));
(*ev->val) = pth_signo;
@ -1090,18 +1111,21 @@ pth_event_status (pth_event_t ev)
static int
do_pth_event_free (pth_event_t ev, int mode)
{
pth_event_t n;
if (!ev)
return FALSE;
if (mode == PTH_FREE_ALL)
{
while (ev)
pth_event_t cur = ev;
do
{
n = ev->next;
CloseHandle (ev->hd);
ev->hd = NULL;
free (ev);
ev = n;
pth_event_t next = cur->next;
CloseHandle (cur->hd);
cur->hd = NULL;
free (cur);
cur = next;
}
while (cur != ev);
}
else if (mode == PTH_FREE_THIS)
{
@ -1111,6 +1135,8 @@ do_pth_event_free (pth_event_t ev, int mode)
ev->hd = NULL;
free (ev);
}
else
return FALSE;
return TRUE;
}
@ -1131,24 +1157,39 @@ pth_event_free (pth_event_t ev, int mode)
pth_event_t
pth_event_isolate (pth_event_t ev)
{
pth_event_t ring = NULL;
pth_event_t ring;
if (!ev)
return NULL;
if (ev->next == ev && ev->prev == ev)
return NULL; /* Only one event. */
ring = ev->next;
ev->prev->next = ev->next;
ev->next->prev = ev->prev;
ev->prev = ev;
ev->next = ev;
return ring;
}
static int
_pth_event_count (pth_event_t ev)
event_count (pth_event_t ev)
{
pth_event_t p;
int cnt=0;
pth_event_t r;
int cnt = 0;
if (!ev)
return 0;
for (p = ev; p; p = p->next)
if (ev)
{
r = ev;
do
{
cnt++;
r = r->next;
}
while (r != ev);
}
return cnt;
}
@ -1166,11 +1207,13 @@ spawn_helper_thread (void *(*func)(void *), void *arg)
sa.lpSecurityDescriptor = NULL;
sa.nLength = sizeof sa;
if (DBG_INFO)
fprintf (stderr, "%s: spawn_helper_thread creating thread ...\n",
log_get_prefix (NULL));
th = CreateThread (&sa, 32*1024,
(LPTHREAD_START_ROUTINE)func,
arg, 0, &tid);
if (DBG_INFO)
fprintf (stderr, "%s: spawn_helper_thread created thread %p\n",
log_get_prefix (NULL), th);
@ -1197,6 +1240,7 @@ wait_fd_thread (void * ctx)
pth_event_t ev = ctx;
wait_for_fd (ev->u.fd, ev->flags & PTH_UNTIL_FD_READABLE, 3600);
if (DBG_INFO)
fprintf (stderr, "%s: wait_fd_thread: exit.\n", log_get_prefix (NULL));
SetEvent (ev->hd);
ExitThread (0);
@ -1211,6 +1255,7 @@ wait_timer_thread (void * ctx)
int n = ev->u.tv.tv_sec*1000;
Sleep (n);
SetEvent (ev->hd);
if (DBG_INFO)
fprintf (stderr, "%s: wait_timer_thread: exit.\n", log_get_prefix (NULL));
ExitThread (0);
return NULL;
@ -1223,50 +1268,61 @@ do_pth_wait (pth_event_t ev)
HANDLE waitbuf[MAXIMUM_WAIT_OBJECTS/2];
int hdidx[MAXIMUM_WAIT_OBJECTS/2];
DWORD n = 0;
pth_event_t tmp;
int pos=0, i=0;
if (!ev)
return 0;
n =_pth_event_count (ev);
n = event_count (ev);
if (n > MAXIMUM_WAIT_OBJECTS/2)
return -1;
if (DBG_INFO)
fprintf (stderr, "%s: pth_wait: cnt %lu\n", log_get_prefix (NULL), n);
for (tmp = ev; tmp; tmp = tmp->next)
if (ev)
{
switch (tmp->u_type)
pth_event_t r = ev;
do
{
switch (r->u_type)
{
case 0:
waitbuf[pos++] = tmp->hd;
waitbuf[pos++] = r->hd;
break;
case PTH_EVENT_SIGS:
waitbuf[pos++] = pth_signo_ev;
if (DBG_INFO)
fprintf (stderr, "pth_wait: add signal event.\n");
break;
case PTH_EVENT_FD:
if (DBG_INFO)
fprintf (stderr, "pth_wait: spawn event wait thread.\n");
hdidx[i++] = pos;
waitbuf[pos++] = spawn_helper_thread (wait_fd_thread, tmp);
waitbuf[pos++] = spawn_helper_thread (wait_fd_thread, r);
break;
case PTH_EVENT_TIME:
if (DBG_INFO)
fprintf (stderr, "pth_wait: spawn event timer thread.\n");
hdidx[i++] = pos;
waitbuf[pos++] = spawn_helper_thread (wait_timer_thread, tmp);
waitbuf[pos++] = spawn_helper_thread (wait_timer_thread, r);
break;
case PTH_EVENT_MUTEX:
fprintf (stderr, "pth_wait: add mutex event.\n");
if (DBG_INFO)
fprintf (stderr, "pth_wait: ignoring mutex event.\n");
break;
}
}
while ( r != ev );
}
if (DBG_INFO)
fprintf (stderr, "%s: pth_wait: set %d\n", log_get_prefix (NULL), pos);
n = WaitForMultipleObjects (pos, waitbuf, FALSE, INFINITE);
free_helper_threads (waitbuf, hdidx, i);
if (DBG_INFO)
fprintf (stderr, "%s: pth_wait: n %ld\n", log_get_prefix (NULL), n);
if (n != WAIT_TIMEOUT)