Critical sections.
[Operating System Dependent Functionality.]

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Detailed Description

Critical section protection can be used to protect regions where:

• mutual exclusion protection is needed.
• it's rather too expensive to create a mutex.
• the time spent in the region is very very brief.

Critical section is a global object, and it prevents any threads from entering any regions that are protected by critical section once a thread is already in the section.

Critial section is not recursive!

Application MUST NOT call any functions that may cause current thread to block (such as allocating memory, performing I/O, locking mutex, etc.) while holding the critical section.

Functions
void	pj_enter_critical_section (void)
void	pj_leave_critical_section (void)

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Function Documentation

void pj_enter_critical_section

(

void

)

Enter critical section.

void pj_leave_critical_section

(

void

)

Leave critical section.