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author | Doug Gilbert <dgilbert@us.ibm.com> | 2012-01-12 10:32:19 -0600 |
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committer | Douglas R. Gilbert <dgilbert@us.ibm.com> | 2012-01-25 10:54:55 -0600 |
commit | c4f6f3ee887c0fa89c4ed5c311410363f6d61cb4 (patch) | |
tree | e309f1aaef54ba14d38bd7d09c63e456edd7a612 /src/include/kernel/futexmgr.H | |
parent | cad6f41c5ceb5affe968a32618e4cf5d53cb7554 (diff) | |
download | talos-hostboot-c4f6f3ee887c0fa89c4ed5c311410363f6d61cb4.tar.gz talos-hostboot-c4f6f3ee887c0fa89c4ed5c311410363f6d61cb4.zip |
Conditional Variable support
Change-Id: Ib715b3a4e775ef183244e8769c6560a85ac19104
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/612
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Diffstat (limited to 'src/include/kernel/futexmgr.H')
-rw-r--r-- | src/include/kernel/futexmgr.H | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/src/include/kernel/futexmgr.H b/src/include/kernel/futexmgr.H index 75fc31b08..aeba05291 100644 --- a/src/include/kernel/futexmgr.H +++ b/src/include/kernel/futexmgr.H @@ -53,12 +53,18 @@ class FutexManager static uint64_t wait(task_t * i_task, uint64_t * i_addr, uint64_t i_val); /** - * Wakeup threads - * @param[in] i_addr pointer to a futex - * @param[in] i_count The max number of threads to wake - * @returns The number of threads awoken + * Wakeup and optionally move waiting processes. + * @param[in] i_futex1 pointer to a futex + * @param[in] i_count1 The max number of tasks to wake + * @param[in] i_futex2 pointer to a futex, (default NULL) Optional + * futex to move i_count_2 unwoken tasks to. + * @param[in] i_count2 The max number of theads to move from futex1 to + * futex2. (default 0) + * + * @returns The number of tasks awoken */ - static uint64_t wake(uint64_t * i_addr, uint64_t i_count); + static uint64_t wake(uint64_t * i_futex1, uint64_t i_count1, + uint64_t * i_futex2 = NULL, uint64_t i_count2 = 0); protected: @@ -74,22 +80,12 @@ class FutexManager private: // functions - /** - * Put the current processes on a wait queue - * @param[in] i_task pointer to the current task structure - * @param[in] i_addr Futex address - * @param[in] i_val Value that *i_addr should contain - * @returns [0 | error code] if *i_addr != i_val returns EWOULDBLOCK - */ + /** see wait(...) */ uint64_t _wait(task_t * i_task, uint64_t * i_addr, uint64_t i_val); - /** - * Wakeup threads - * @param[in] i_addr pointer to a futex - * @param[in] i_count The max number of threads to wake - * @returns The number of threads awoken - */ - uint64_t _wake(uint64_t * i_addr, uint64_t i_count); + /** see wake(...) */ + uint64_t _wake(uint64_t * i_futex1, uint64_t i_count1, + uint64_t * i_futex2, uint64_t i_count2); private: // data |