libs/newlib-cygwin
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newlib-cygwin
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* cygthread.h (cygthread::terminate): Declare new function. 

(cygthread::initialized): Change to 'int'.
* cygthread.cc (cygthread::stub): Exit thread if initialized < 0.
(cygthread::new): Ditto.
(cygthread::runner): Ditto.  Set initialized using xor to preserve sign.
(cygthread::terminate): New function.
* dcrt0.cc (do_exit): Call cygthread::terminate.
This commit is contained in:
Christopher Faylor 2002-09-29 02:19:35 +00:00
parent fc5dae1cca
commit aea1f301fc
5 changed files with 123 additions and 87 deletions
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11
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,14 @@
2002-09-28 Christopher Faylor <cgf@redhat.com>
* cygthread.h (cygthread::terminate): Declare new function.
(cygthread::initialized): Change to 'int'.
* cygthread.cc (cygthread::stub): Exit thread if initialized < 0.
(cygthread::new): Ditto.
(cygthread::runner): Ditto. Set initialized using xor to preserve
sign.
(cygthread::terminate): New function.
* dcrt0.cc (do_exit): Call cygthread::terminate.
2002-09-27 Robert Collins <rbtcollins@hotmail.com>
* thread.cc (pthread_key::run_destructor): Run_destructor is not

35
winsup/cygwin/cygthread.cc
View File

@ -19,7 +19,7 @@ static cygthread NO_COPY threads[6];
#define NTHREADS (sizeof (threads) / sizeof (threads[0]))
DWORD NO_COPY cygthread::main_thread_id;
bool NO_COPY cygthread::initialized;
int NO_COPY cygthread::initialized;
/* Initial stub called by cygthread constructor. Performs initial
per-thread initialization and loops waiting for new thread functions
@ -68,7 +68,10 @@ cygthread::stub (VOID *arg)
#endif
SetEvent (info->ev);
info->__name = NULL;
SuspendThread (info->h);
if (initialized < 0)
ExitThread (0);
else
SuspendThread (info->h);
}
}
@ -78,9 +81,14 @@ DWORD WINAPI
cygthread::runner (VOID *arg)
{
for (unsigned i = 0; i < NTHREADS; i++)
threads[i].h = CreateThread (&sec_none_nih, 0, cygthread::stub, &threads[i],
CREATE_SUSPENDED, &threads[i].avail);
cygthread::initialized = true;
if (!initialized)
threads[i].h = CreateThread (&sec_none_nih, 0, cygthread::stub,
&threads[i], CREATE_SUSPENDED,
&threads[i].avail);
else
return 0;
initialized ^= 1;
return 0;
}
@ -127,7 +135,10 @@ new (size_t)
for (;;)
{
bool was_initialized = initialized;
int was_initialized = initialized;
if (was_initialized < 0)
ExitThread (0);
/* Search the threads array for an empty slot to use */
for (info = threads + NTHREADS - 1; info >= threads; info--)
if ((id = (DWORD) InterlockedExchange ((LPLONG) &info->avail, 0)))
@ -140,6 +151,9 @@ new (size_t)
return info;
}
if (was_initialized < 0)
ExitThread (0);
if (!was_initialized)
Sleep (0); /* thread_runner is not finished yet. */
else
@ -259,3 +273,12 @@ cygthread::detach ()
}
}
}
void
cygthread::terminate ()
{
initialized = -1;
for (cygthread *info = threads + NTHREADS - 1; info >= threads; info--)
if (!(DWORD) InterlockedExchange ((LPLONG) &info->avail, 0) && info->id)
SetEvent (info->ev);
}

3
winsup/cygwin/cygthread.h
View File

@ -17,7 +17,7 @@ class cygthread
VOID *arg;
bool is_freerange;
static DWORD main_thread_id;
static bool initialized;
static int initialized;
static DWORD WINAPI runner (VOID *);
static DWORD WINAPI free_runner (VOID *);
static DWORD WINAPI stub (VOID *);
@ -33,6 +33,7 @@ class cygthread
void * operator new (size_t);
static void * freerange ();
void exit_thread ();
static void terminate ();
};
#define cygself NULL

1
winsup/cygwin/dcrt0.cc
View File

@ -1024,6 +1024,7 @@ do_exit (int status)
window_terminate ();
events_terminate ();
shared_terminate ();
cygthread::terminate ();
minimal_printf ("winpid %d, exit %d", GetCurrentProcessId (), n);
myself->exit (n);

158
winsup/cygwin/thread.h
View File

@ -159,8 +159,8 @@ class verifyable_object
public:
long magic;
verifyable_object (long);
~verifyable_object ();
verifyable_object (long);
virtual ~verifyable_object ();
};
typedef enum
@ -197,7 +197,7 @@ public:
void *get () const;
pthread_key (void (*)(void *));
~pthread_key ();
~pthread_key ();
static void fixup_before_fork();
static void fixup_after_fork();
@ -225,23 +225,23 @@ template <class ListNode> void
List<ListNode>::Insert (ListNode *aNode)
{
if (!aNode)
return;
return;
aNode->next = (ListNode *) InterlockedExchangePointer (&head, aNode);
}
template <class ListNode> ListNode *
List<ListNode>::Remove ( ListNode *aNode)
{
if (!aNode)
return NULL;
return NULL;
if (!head)
return NULL;
return NULL;
if (aNode == head)
return Pop ();
return Pop ();
ListNode *resultPrev = head;
while (resultPrev && resultPrev->next && !(aNode == resultPrev->next))
resultPrev = resultPrev->next;
resultPrev = resultPrev->next;
if (resultPrev)
return (ListNode *)InterlockedExchangePointer (&resultPrev->next, resultPrev->next->next);
return (ListNode *)InterlockedExchangePointer (&resultPrev->next, resultPrev->next->next);
return NULL;
}
template <class ListNode> ListNode *
@ -255,10 +255,10 @@ List<ListNode>::forEach (void (*callback)(ListNode *))
{
ListNode *aNode = head;
while (aNode)
{
callback (aNode);
aNode = aNode->next;
}
{
callback (aNode);
aNode = aNode->next;
}
}
class pthread_attr:public verifyable_object
@ -271,8 +271,8 @@ public:
struct sched_param schedparam;
size_t stacksize;
pthread_attr ();
~pthread_attr ();
pthread_attr ();
~pthread_attr ();
};
class pthread_mutexattr:public verifyable_object
@ -281,8 +281,8 @@ public:
static bool isGoodObject(pthread_mutexattr_t const *);
int pshared;
int mutextype;
pthread_mutexattr ();
~pthread_mutexattr ();
pthread_mutexattr ();
~pthread_mutexattr ();
};
class pthread_mutex:public verifyable_object
@ -327,80 +327,80 @@ public:
LONG *sigtodo;
virtual void create (void *(*)(void *), pthread_attr *, void *);
pthread ();
virtual ~pthread ();
pthread ();
virtual ~pthread ();
static void initMainThread(pthread *, HANDLE);
static bool isGoodObject(pthread_t const *);
static void atforkprepare();
static void atforkparent();
static void atforkchild();
static void initMainThread(pthread *, HANDLE);
static bool isGoodObject(pthread_t const *);
static void atforkprepare();
static void atforkparent();
static void atforkchild();
/* API calls */
static int cancel (pthread_t);
static int join (pthread_t * thread, void **return_val);
static int detach (pthread_t * thread);
static int create (pthread_t * thread, const pthread_attr_t * attr,
/* API calls */
static int cancel (pthread_t);
static int join (pthread_t * thread, void **return_val);
static int detach (pthread_t * thread);
static int create (pthread_t * thread, const pthread_attr_t * attr,
void *(*start_routine) (void *), void *arg);
static int once (pthread_once_t *, void (*)(void));
static int atfork(void (*)(void), void (*)(void), void (*)(void));
static int suspend (pthread_t * thread);
static int resume (pthread_t * thread);
static int once (pthread_once_t *, void (*)(void));
static int atfork(void (*)(void), void (*)(void), void (*)(void));
static int suspend (pthread_t * thread);
static int resume (pthread_t * thread);
virtual void exit (void *value_ptr);
virtual void exit (void *value_ptr);
virtual int cancel ();
virtual int cancel ();
virtual void testcancel ();
static void static_cancel_self ();
virtual void testcancel ();
static void static_cancel_self ();
virtual int setcancelstate (int state, int *oldstate);
virtual int setcanceltype (int type, int *oldtype);
virtual int setcancelstate (int state, int *oldstate);
virtual int setcanceltype (int type, int *oldtype);
virtual void push_cleanup_handler (__pthread_cleanup_handler *handler);
virtual void pop_cleanup_handler (int const execute);
virtual void push_cleanup_handler (__pthread_cleanup_handler *handler);
virtual void pop_cleanup_handler (int const execute);
static pthread* self ();
static void *thread_init_wrapper (void *);
static pthread* self ();
static void *thread_init_wrapper (void *);
virtual unsigned long getsequence_np();
virtual unsigned long getsequence_np();
private:
DWORD thread_id;
__pthread_cleanup_handler *cleanup_stack;
pthread_mutex mutex;
DWORD thread_id;
__pthread_cleanup_handler *cleanup_stack;
pthread_mutex mutex;
void pop_all_cleanup_handlers (void);
void precreate (pthread_attr *);
void postcreate ();
void setThreadIdtoCurrent();
static void setTlsSelfPointer(pthread *);
void cancel_self ();
DWORD getThreadId ();
void pop_all_cleanup_handlers (void);
void precreate (pthread_attr *);
void postcreate ();
void setThreadIdtoCurrent();
static void setTlsSelfPointer(pthread *);
void cancel_self ();
DWORD getThreadId ();
};
class pthreadNull : public pthread
{
public:
static pthread *getNullpthread();
~pthreadNull();
static pthread *getNullpthread();
~pthreadNull();
/* From pthread These should never get called
* as the ojbect is not verifyable
*/
void create (void *(*)(void *), pthread_attr *, void *);
void exit (void *value_ptr);
int cancel ();
void testcancel ();
int setcancelstate (int state, int *oldstate);
int setcanceltype (int type, int *oldtype);
void push_cleanup_handler (__pthread_cleanup_handler *handler);
void pop_cleanup_handler (int const execute);
unsigned long getsequence_np();
/* From pthread These should never get called
* as the ojbect is not verifyable
*/
void create (void *(*)(void *), pthread_attr *, void *);
void exit (void *value_ptr);
int cancel ();
void testcancel ();
int setcancelstate (int state, int *oldstate);
int setcanceltype (int type, int *oldtype);
void push_cleanup_handler (__pthread_cleanup_handler *handler);
void pop_cleanup_handler (int const execute);
unsigned long getsequence_np();
private:
pthreadNull ();
static pthreadNull _instance;
pthreadNull ();
static pthreadNull _instance;
};
class pthread_condattr:public verifyable_object
@ -432,8 +432,8 @@ public:
void Signal ();
void fixup_after_fork ();
pthread_cond (pthread_condattr *);
~pthread_cond ();
pthread_cond (pthread_condattr *);
~pthread_cond ();
};
class pthread_once
@ -464,8 +464,8 @@ public:
int TryWait ();
void fixup_after_fork ();
semaphore (int, unsigned int);
~semaphore ();
semaphore (int, unsigned int);
~semaphore ();
};
class callback
@ -505,11 +505,11 @@ public:
void fixup_after_fork (void);
MTinterface ():reent_index (0), indexallocated (0), threadcount (1)
{
pthread_prepare = NULL;
pthread_child = NULL;
pthread_parent = NULL;
}
{
pthread_prepare = NULL;
pthread_child = NULL;
pthread_parent = NULL;
}
};
extern "C"