netwerk/sctp/src/netinet/sctp_callout.h@97036ab72558 (annotated)
netwerk/sctp/src/netinet/sctp_callout.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rwxr-xr-x
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /*- |
| michael@0 | 2 | * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. |
| michael@0 | 3 | * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. |
| michael@0 | 4 | * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. |
| michael@0 | 5 | * |
| michael@0 | 6 | * Redistribution and use in source and binary forms, with or without |
| michael@0 | 7 | * modification, are permitted provided that the following conditions |
| michael@0 | 8 | * are met: |
| michael@0 | 9 | * 1. Redistributions of source code must retain the above copyright |
| michael@0 | 10 | * notice, this list of conditions and the following disclaimer. |
| michael@0 | 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| michael@0 | 12 | * notice, this list of conditions and the following disclaimer in the |
| michael@0 | 13 | * documentation and/or other materials provided with the distribution. |
| michael@0 | 14 | * 3. Neither the name of the project nor the names of its contributors |
| michael@0 | 15 | * may be used to endorse or promote products derived from this software |
| michael@0 | 16 | * without specific prior written permission. |
| michael@0 | 17 | * |
| michael@0 | 18 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| michael@0 | 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| michael@0 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| michael@0 | 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| michael@0 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| michael@0 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| michael@0 | 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| michael@0 | 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| michael@0 | 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| michael@0 | 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| michael@0 | 28 | * SUCH DAMAGE. |
| michael@0 | 29 | */ |
| michael@0 | 30 | |
| michael@0 | 31 | #ifdef __FreeBSD__ |
| michael@0 | 32 | #include <sys/cdefs.h> |
| michael@0 | 33 | __FBSDID("$FreeBSD$"); |
| michael@0 | 34 | #endif |
| michael@0 | 35 | |
| michael@0 | 36 | #ifndef _NETINET_SCTP_CALLOUT_ |
| michael@0 | 37 | #define _NETINET_SCTP_CALLOUT_ |
| michael@0 | 38 | |
| michael@0 | 39 | /* |
| michael@0 | 40 | * NOTE: the following MACROS are required for locking the callout |
| michael@0 | 41 | * queue along with a lock/mutex in the OS specific headers and |
| michael@0 | 42 | * implementation files:: |
| michael@0 | 43 | * - SCTP_TIMERQ_LOCK() |
| michael@0 | 44 | * - SCTP_TIMERQ_UNLOCK() |
| michael@0 | 45 | * - SCTP_TIMERQ_LOCK_INIT() |
| michael@0 | 46 | * - SCTP_TIMERQ_LOCK_DESTROY() |
| michael@0 | 47 | */ |
| michael@0 | 48 | |
| michael@0 | 49 | #define _SCTP_NEEDS_CALLOUT_ 1 |
| michael@0 | 50 | |
| michael@0 | 51 | #define SCTP_TICKS_PER_FASTTIMO 20 /* called about every 20ms */ |
| michael@0 | 52 | |
| michael@0 | 53 | #if defined(__Userspace__) |
| michael@0 | 54 | #if defined(__Userspace_os_Windows) |
| michael@0 | 55 | #define SCTP_TIMERQ_LOCK() EnterCriticalSection(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 56 | #define SCTP_TIMERQ_UNLOCK() LeaveCriticalSection(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 57 | #define SCTP_TIMERQ_LOCK_INIT() InitializeCriticalSection(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 58 | #define SCTP_TIMERQ_LOCK_DESTROY() DeleteCriticalSection(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 59 | #else |
| michael@0 | 60 | #define SCTP_TIMERQ_LOCK() (void)pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 61 | #define SCTP_TIMERQ_UNLOCK() (void)pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 62 | #define SCTP_TIMERQ_LOCK_INIT() (void)pthread_mutex_init(&SCTP_BASE_VAR(timer_mtx), NULL) |
| michael@0 | 63 | #define SCTP_TIMERQ_LOCK_DESTROY() (void)pthread_mutex_destroy(&SCTP_BASE_VAR(timer_mtx)) |
| michael@0 | 64 | #endif |
| michael@0 | 65 | |
| michael@0 | 66 | extern int ticks; |
| michael@0 | 67 | #endif |
| michael@0 | 68 | |
| michael@0 | 69 | TAILQ_HEAD(calloutlist, sctp_callout); |
| michael@0 | 70 | |
| michael@0 | 71 | struct sctp_callout { |
| michael@0 | 72 | TAILQ_ENTRY(sctp_callout) tqe; |
| michael@0 | 73 | int c_time; /* ticks to the event */ |
| michael@0 | 74 | void *c_arg; /* function argument */ |
| michael@0 | 75 | void (*c_func)(void *); /* function to call */ |
| michael@0 | 76 | int c_flags; /* state of this entry */ |
| michael@0 | 77 | }; |
| michael@0 | 78 | typedef struct sctp_callout sctp_os_timer_t; |
| michael@0 | 79 | |
| michael@0 | 80 | #define SCTP_CALLOUT_ACTIVE 0x0002 /* callout is currently active */ |
| michael@0 | 81 | #define SCTP_CALLOUT_PENDING 0x0004 /* callout is waiting for timeout */ |
| michael@0 | 82 | |
| michael@0 | 83 | void sctp_os_timer_init(sctp_os_timer_t *tmr); |
| michael@0 | 84 | void sctp_os_timer_start(sctp_os_timer_t *, int, void (*)(void *), void *); |
| michael@0 | 85 | int sctp_os_timer_stop(sctp_os_timer_t *); |
| michael@0 | 86 | |
| michael@0 | 87 | #define SCTP_OS_TIMER_INIT sctp_os_timer_init |
| michael@0 | 88 | #define SCTP_OS_TIMER_START sctp_os_timer_start |
| michael@0 | 89 | #define SCTP_OS_TIMER_STOP sctp_os_timer_stop |
| michael@0 | 90 | /* MT FIXME: Is the following correct? */ |
| michael@0 | 91 | #define SCTP_OS_TIMER_STOP_DRAIN SCTP_OS_TIMER_STOP |
| michael@0 | 92 | #define SCTP_OS_TIMER_PENDING(tmr) ((tmr)->c_flags & SCTP_CALLOUT_PENDING) |
| michael@0 | 93 | #define SCTP_OS_TIMER_ACTIVE(tmr) ((tmr)->c_flags & SCTP_CALLOUT_ACTIVE) |
| michael@0 | 94 | #define SCTP_OS_TIMER_DEACTIVATE(tmr) ((tmr)->c_flags &= ~SCTP_CALLOUT_ACTIVE) |
| michael@0 | 95 | |
| michael@0 | 96 | #if defined(__Userspace__) |
| michael@0 | 97 | void sctp_start_timer(void); |
| michael@0 | 98 | #endif |
| michael@0 | 99 | #if defined(__APPLE__) |
| michael@0 | 100 | void sctp_timeout(void *); |
| michael@0 | 101 | #endif |
| michael@0 | 102 | |
| michael@0 | 103 | #endif |
