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Added timeout constant B_ABSOLUTE_REAL_TIME_TIMEOUT which specifies a

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timeout relative to the Epoch.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25434 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2008-05-10 21:34:51 +00:00
parent b932012815
commit 4d3680aaef
2 changed files with 19 additions and 5 deletions
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headers/os/kernel/OS.h
+10 -3
View File
@@ -25,9 +25,16 @@ extern "C" {
#define B_INFINITE_TIMEOUT (9223372036854775807LL) #define B_INFINITE_TIMEOUT (9223372036854775807LL)
enum { enum {
B_TIMEOUT = 8, /* relative timeout */ B_TIMEOUT = 0x8, /* relative timeout */
B_RELATIVE_TIMEOUT = 8, /* fails after a relative timeout with B_WOULD_BLOCK */ B_RELATIVE_TIMEOUT = 0x8, /* fails after a relative timeout
B_ABSOLUTE_TIMEOUT = 16 /* fails after an absolute timeout with B_WOULD BLOCK */ with B_TIMED_OUT */
B_ABSOLUTE_TIMEOUT = 0x10, /* fails after an absolute timeout
with B_TIMED_OUT */
/* experimental Haiku only API */
B_TIMEOUT_REAL_TIME_BASE = 0x40,
B_ABSOLUTE_REAL_TIME_TIMEOUT = B_ABSOLUTE_TIMEOUT
| B_TIMEOUT_REAL_TIME_BASE
}; };
/*-------------------------------------------------------------*/ /*-------------------------------------------------------------*/
src/system/kernel/thread.cpp
+9 -2
View File
@@ -30,6 +30,7 @@
#include <kimage.h> #include <kimage.h>
#include <kscheduler.h> #include <kscheduler.h>
#include <ksignal.h> #include <ksignal.h>
#include <real_time_clock.h>
#include <smp.h> #include <smp.h>
#include <syscalls.h> #include <syscalls.h>
#include <syscall_restart.h> #include <syscall_restart.h>
@@ -2271,8 +2272,14 @@ thread_block_with_timeout_locked(uint32 timeoutFlags, bigtime_t timeout)
// avoids nasty race conditions and deadlock problems that could // avoids nasty race conditions and deadlock problems that could
// otherwise occur between our cancel_timer() and a concurrently // otherwise occur between our cancel_timer() and a concurrently
// executing thread_block_timeout(). // executing thread_block_timeout().
uint32 timerFlags = (timeoutFlags & B_RELATIVE_TIMEOUT) uint32 timerFlags;
? B_ONE_SHOT_RELATIVE_TIMER : B_ONE_SHOT_ABSOLUTE_TIMER; if ((timeoutFlags & B_RELATIVE_TIMEOUT) != 0) {
timerFlags = B_ONE_SHOT_RELATIVE_TIMER;
} else {
timerFlags = B_ONE_SHOT_ABSOLUTE_TIMER;
if ((timeoutFlags & B_TIMEOUT_REAL_TIME_BASE) != 0)
timeout -= rtc_boot_time();
}
timerFlags |= B_TIMER_ACQUIRE_THREAD_LOCK; timerFlags |= B_TIMER_ACQUIRE_THREAD_LOCK;
// install the timer // install the timer