latch_holder_t Class Reference

Collaboration diagram for latch_holder_t:

[legend]List of all members.

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Detailed Description

Indicates a latch is held by this thread.

Every time we want to grab a latch, we have to create a latch_holder_t. We do that with the holder_search class, which searches a TLS list to make sure we(this thread) doesn't already hold the latch, and, if not, it creates a new latch_holder_t for the new latch acquisition. It then stuffs the latch_holder_t in the TLS list. If we do already have hold the latch in some capacity, the holder_search returns that existing latch_holder_t.

See also:

holder_search

Definition at line 93 of file latch.h.

Public Member Functions
	latch_holder_t ()
bool	operator== (latch_holder_t const &other) const
void	print (ostream &o) const
Public Attributes
latch_t *	_latch
latch_mode_t	_mode
int	_count
latch_holder_t *	_prev
latch_holder_t *	_next
Static Public Attributes
static __thread latch_holder_t *	thread_local_holders
	Linked list of all latches held by this thread.
static __thread latch_holder_t *	thread_local_freelist
	Pool of unused latch_holder_t instances.

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The documentation for this class was generated from the following files:

• src/common/latch.h
• src/common/latch.cpp

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