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#include "xthread.h" |
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#include <errno.h> |
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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include <stddef.h> |
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#include "EVAPI.h" |
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|
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/* our userdata */ |
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typedef struct { |
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mutex_t lock; /* global loop lock */ |
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void (*signal_func) (void *signal_arg, int value); |
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void *signal_arg; |
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ev_async async_w; |
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thread_t tid; |
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unsigned int max_loops; |
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unsigned int count; |
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|
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cond_t invoke_cv; |
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|
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SV *interrupt; |
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#if defined(_WIN32) && defined(USE_ITHREADS) |
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void *thx; |
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#endif |
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} udat; |
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|
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static void loop_set_cb (EV_P); |
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|
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static void |
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fg_invoke_pending (EV_P) |
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{ |
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udat *u = ev_userdata (EV_A); |
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|
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u->count = ev_pending_count (EV_A); |
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|
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if (u->count) |
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ev_invoke_pending (EV_A); |
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} |
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|
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static void |
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c_func (pTHX_ void *loop_, int value) |
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{ |
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struct ev_loop *loop = (struct ev_loop *)loop_; |
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udat *u = ev_userdata (EV_A); |
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int i; |
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|
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X_LOCK (u->lock); |
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ev_invoke_pending (EV_A); |
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|
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/* do any additional foreground loop runs */ |
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for (i = u->max_loops; i--; ) |
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{ |
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/* this is a bit tricky, but we can manage... */ |
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u->count = 0; |
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|
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ev_set_invoke_pending_cb (EV_A, fg_invoke_pending); |
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ev_set_loop_release_cb (EV_A, 0, 0); |
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ev_loop (EV_A, EVLOOP_NONBLOCK); |
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loop_set_cb (EV_A); |
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|
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if (!u->count) |
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break; |
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} |
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|
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X_COND_SIGNAL (u->invoke_cv); |
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X_UNLOCK (u->lock); |
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} |
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|
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static void |
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async_cb (EV_P_ ev_async *w, int revents) |
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{ |
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/* just used for the side effects */ |
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} |
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|
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static void |
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l_release (EV_P) |
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{ |
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udat *u = ev_userdata (EV_A); |
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X_UNLOCK (u->lock); |
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} |
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|
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static void |
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l_acquire (EV_P) |
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{ |
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udat *u = ev_userdata (EV_A); |
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X_LOCK (u->lock); |
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} |
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|
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static void |
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l_invoke (EV_P) |
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{ |
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udat *u = ev_userdata (EV_A); |
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|
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while (ev_pending_count (EV_A)) |
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{ |
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u->signal_func (u->signal_arg, 1); |
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X_COND_WAIT (u->invoke_cv, u->lock); |
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} |
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} |
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|
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static void |
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loop_set_cb (EV_P) |
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{ |
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ev_set_invoke_pending_cb (EV_A, l_invoke); |
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ev_set_loop_release_cb (EV_A, l_release, l_acquire); |
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} |
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|
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X_THREAD_PROC(l_run) |
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{ |
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struct ev_loop *loop = (struct ev_loop *)thr_arg; |
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#if defined(_WIN32) && defined(USE_ITHREADS) |
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udat *u = ev_userdata (EV_A); |
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|
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/* just setting the same context pointer as the other thread is */ |
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/* probably fatal, yet, I have no clue what makes libev crash (malloc?) */ |
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/* as visual c also crashes when it tries to debug the crash */ |
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/* the loser platform is indeed a crashy OS */ |
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PERL_SET_CONTEXT (u->thx); |
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#endif |
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|
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l_acquire (EV_A); |
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|
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/* yeah */ |
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pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0); |
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|
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ev_ref (EV_A); |
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ev_loop (EV_A, 0); |
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ev_unref (EV_A); |
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|
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l_release (EV_A); |
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|
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return 0; |
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} |
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|
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static void |
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scope_lock_cb (pTHX_ void *loop_) |
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{ |
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struct ev_loop *loop = (struct ev_loop *)SvIVX ((SV *)loop_); |
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udat *u = ev_userdata (EV_A); |
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|
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X_UNLOCK (u->lock); |
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SvREFCNT_dec ((SV *)loop_); |
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} |
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|
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MODULE = EV::Loop::Async PACKAGE = EV::Loop::Async |
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|
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PROTOTYPES: ENABLE |
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|
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BOOT: |
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{ |
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I_EV_API ("EV::Loop::Async"); |
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CvNODEBUG_on (get_cv ("EV::Loop::Async::scope_lock", 0)); /* otherwise calling scope can be the debugger */ |
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} |
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|
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void |
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_c_func (SV *loop) |
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PPCODE: |
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EXTEND (SP, 2); |
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PUSHs (sv_2mortal (newSViv (PTR2IV (c_func)))); |
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PUSHs (sv_2mortal (newSViv (SvIVX (SvRV (loop))))); |
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|
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void |
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_attach (SV *loop_, SV *interrupt, IV sig_func, void *sig_arg) |
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CODE: |
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{ |
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pthread_mutexattr_t ma; |
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struct ev_loop *loop = (struct ev_loop *)SvIVX (SvRV (loop_)); |
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udat *u; |
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|
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Newz (0, u, 1, udat); |
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u->interrupt = newSVsv (interrupt); |
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u->signal_func = (void (*)(void *, int))sig_func; |
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u->signal_arg = sig_arg; |
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#if defined(_WIN32) && defined(USE_ITHREADS) |
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u->thx = PERL_GET_CONTEXT; |
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#endif |
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|
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ev_async_init (&u->async_w, async_cb); |
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ev_async_start (EV_A, &u->async_w); |
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|
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pthread_mutexattr_init (&ma); |
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pthread_mutexattr_settype (&ma, PTHREAD_MUTEX_RECURSIVE); |
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pthread_mutex_init (&u->lock, &ma); |
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pthread_mutexattr_destroy (&ma); |
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|
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pthread_cond_init (&u->invoke_cv, 0); |
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|
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ev_set_userdata (EV_A, u); |
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loop_set_cb (EV_A); |
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|
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thread_create (&u->tid, l_run, loop); |
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} |
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|
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SV * |
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interrupt (SV *loop_) |
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CODE: |
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{ |
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struct ev_loop *loop = (struct ev_loop *)SvIVX (SvRV (loop_)); |
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udat *u = ev_userdata (EV_A); |
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|
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RETVAL = newSVsv (u->interrupt); |
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} |
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OUTPUT: |
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RETVAL |
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|
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void |
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set_max_foreground_loops (SV *loop_, UV max_loops) |
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CODE: |
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{ |
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struct ev_loop *loop = (struct ev_loop *)SvIVX (SvRV (loop_)); |
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udat *u = ev_userdata (EV_A); |
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|
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u->max_loops = max_loops; |
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} |
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|
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void |
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lock (SV *loop_) |
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ALIAS: |
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lock = 0 |
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unlock = 1 |
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notify = 2 |
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CODE: |
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{ |
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struct ev_loop *loop = (struct ev_loop *)SvIVX (SvRV (loop_)); |
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udat *u = ev_userdata (EV_A); |
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|
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switch (ix) |
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{ |
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case 0: X_LOCK (u->lock); break; |
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case 1: X_UNLOCK (u->lock); break; |
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case 2: ev_async_send (EV_A, &u->async_w); break; |
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} |
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} |
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|
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void |
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scope_lock (SV *loop_) |
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CODE: |
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{ |
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struct ev_loop *loop = (struct ev_loop *)SvIVX (SvRV (loop_)); |
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udat *u = ev_userdata (EV_A); |
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|
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X_LOCK (u->lock); |
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|
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LEAVE; /* unfortunately, perl sandwiches XS calls into ENTER/LEAVE */ |
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SAVEDESTRUCTOR_X (scope_lock_cb, (void *)SvREFCNT_inc (SvRV (loop_))); |
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ENTER; /* unfortunately, perl sandwiches XS calls into ENTER/LEAVE */ |
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} |
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|
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void |
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DESTROY (SV *loop_) |
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CODE: |
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{ |
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struct ev_loop *loop = (struct ev_loop *)SvIVX (SvRV (loop_)); |
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udat *u = ev_userdata (EV_A); |
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|
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if (u) |
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{ |
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X_LOCK (u->lock); |
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ev_async_stop (EV_A, &u->async_w); |
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/* now thread is around blocking call, or in pthread_cond_wait */ |
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pthread_cancel (u->tid); |
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X_UNLOCK (u->lock); |
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pthread_mutex_destroy (&u->lock); |
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pthread_cond_destroy (&u->invoke_cv); |
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SvREFCNT_dec (u->interrupt); |
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Safefree (u); |
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} |
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} |
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|
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