#include <Test_and_Set.h>
Inheritance diagram for ACE_Test_and_Set< ACE_LOCK, TYPE >:
Public Member Functions | |
ACE_Test_and_Set (TYPE initial_value=0) | |
TYPE | is_set (void) const |
Returns true if we are set, else false. | |
TYPE | set (TYPE) |
virtual int | handle_signal (int signum, siginfo_t *=0, ucontext_t *=0) |
Private Attributes | |
TYPE | is_set_ |
Keeps track of our state. | |
ACE_LOCK | lock_ |
Protect the state from race conditions. |
This class keeps track of the status of , which can be set based on various events (such as receipt of a signal). This class is derived from ACE_Event_Handler so that it can be "signaled" by a Reactor when a signal occurs. We assume that is a data type that can be assigned the value 0 or 1.
Definition at line 38 of file Test_and_Set.h.
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Definition at line 16 of file Test_and_Set.cpp.
00017 : is_set_ (initial_value) 00018 { 00019 } |
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Called when object is signaled by OS (either via UNIX signals or when a Win32 object becomes signaled). Reimplemented from ACE_Event_Handler. Definition at line 40 of file Test_and_Set.cpp. References ACE_Test_and_Set< ACE_LOCK, TYPE >::set(), and ucontext_t.
00041 { 00042 // By setting this to 1, we are "signaling" to anyone calling 00043 // <is_set> or or <set> that the "test and set" object is in the 00044 // "signaled" state, i.e., it's "available" to be set back to 0. 00045 this->set (1); 00046 return 0; 00047 } |
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Returns true if we are set, else false.
Definition at line 23 of file Test_and_Set.cpp. References ACE_GUARD_RETURN.
00024 { 00025 ACE_GUARD_RETURN (ACE_LOCK, ace_mon, (ACE_LOCK &) this->lock_, this->is_set_); 00026 return this->is_set_; 00027 } |
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Sets the status, returning the original value of . Definition at line 31 of file Test_and_Set.cpp. References ACE_GUARD_RETURN. Referenced by ACE_Test_and_Set< ACE_LOCK, TYPE >::handle_signal().
00032 { 00033 ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, this->is_set_); 00034 TYPE o_status = this->is_set_; 00035 this->is_set_ = status; 00036 return o_status; 00037 } |
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Keeps track of our state.
Definition at line 58 of file Test_and_Set.h. |
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Protect the state from race conditions.
Definition at line 61 of file Test_and_Set.h. |