/* * Copyright (c) 2010 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of Apple Inc. 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Neither Open Software * Foundation, Inc., Hewlett-Packard Company nor Digital * Equipment Corporation makes any representations about the suitability * of this software for any purpose. * * Copyright (c) 2007, Novell, Inc. All rights reserved. * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of Novell Inc. nor the names of its contributors * may be used to endorse or promote products derived from this * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef __DCETHREAD_PRIVATE_H__ #define __DCETHREAD_PRIVATE_H__ #include <dce/dcethread.h> struct _dcethread { /* Handle of associated pthread */ pthread_t pthread; /* Reference count */ unsigned int refs; /* Current state of thread Changing state should be done with lock held and a signal should be broadcast on state_changed */ enum { /* Normal, running state */ DCETHREAD_STATE_ACTIVE = 0, /* Blocked */ DCETHREAD_STATE_BLOCKED = 1, /* An interrupt has been requested */ DCETHREAD_STATE_INTERRUPT = 2, /* Thread has exited */ DCETHREAD_STATE_DEAD = 5, /* Thread has been created but is not yet running */ DCETHREAD_STATE_CREATED = 6 } state; /* Boolean attributes */ struct { /* Do we own the underlying pthread? (that is, it should be joined/detached when this dcethread is deleted) FIXME: give this a better name */ unsigned joinable :1; /* Is asychronous cancellation enabled? */ unsigned async :1; /* Is the thread currently interruptible? */ unsigned interruptible :1; /* Is the thread currently locked? (for debugging) */ unsigned locked :1; } flag; /* Return status (as set by pthread_exit() or returning from start func) */ void* status; /* Function to perform an interruption on this thread. This function is called after setting the state to INTERRUPT in order to wake it up as necessary. Returns 1 if the thread is definitely interrupted, 0 if it may not have worked */ int (*interrupt)(dcethread* thread, void* data); /* Data pointer for interruption function */ void *interrupt_data; /* Function to handle an interruption. This function is invoked within this thread when an interruption is acknowledged. The default behavior is to throw an exception. */ void (*handle_interrupt)(dcethread* thread, void* data); /* Data pointer for interrupt handler function */ void *handle_interrupt_data; /* Lock for atomically updating this structure */ pthread_mutex_t lock; /* Condition variable to wait for a state change */ pthread_cond_t state_change; }; typedef struct { dcethread_mutex *mutex; dcethread_cond *cond; } condwait_info; void dcethread__init (void); dcethread* dcethread__new (void); void dcethread__delete(dcethread* thread); dcethread* dcethread__self(void); void dcethread__init_self(dcethread* thread); void dcethread__retain(dcethread* thread); void dcethread__release(dcethread* thread); void dcethread__lock(dcethread* thread); void dcethread__unlock(dcethread* info); void dcethread__wait(dcethread* thread); void dcethread__timedwait(dcethread* thread, struct timespec* ts); void dcethread__change_state(dcethread* thread, int state); void dcethread__lock_global(void); void dcethread__unlock_global(void); void dcethread__dispatchinterrupt(dcethread* thread); void dcethread__interrupt(dcethread* thread); void dcethread__set_interrupt_handler(dcethread* thread, void (*handle_interrupt)(dcethread*, void*), void* data); int dcethread__begin_block(dcethread* thread, int (*interrupt)(dcethread*, void*), void* data, int (**old_interrupt)(dcethread*, void*), void** old_data); int dcethread__poll_end_block(dcethread* thread, int (*interrupt)(dcethread*, void*), void* data); int dcethread__end_block(dcethread* thread, int (*interrupt)(dcethread*, void*), void* data); int dcethread__interrupt_syscall(dcethread* thread, void* data); int dcethread__interrupt_condwait(dcethread* thread, void* data); void dcethread__cleanup_self(dcethread* self); #endif