Returns true if another process holds an exclusive lock on the file. Returns false if this is not the case.
If a block of code is passed to this method, it will be run iff this process can obtain an exclusive lock on the file. The block will be run while this lock is held, and the exclusive lock will be released when the method returns.
The exclusive lock is requested in a non-blocking mode. This method will return immediately (and the block will not be executed) if an exclusive lock cannot be obtained.
# File lib/logging/utils.rb, line 145 145: def flock? 146: status = flock(LOCK_EX|LOCK_NB) 147: case status 148: when false; true 149: when 0; block_given? ? yield : false 150: else 151: raise SystemCallError, "flock failed with status: #{status}" 152: end 153: ensure 154: flock LOCK_UN 155: end
Execute a block in the context of a shared lock on this file. A shared lock will be obtained on the file, the block executed, and the lock released.
# File lib/logging/utils.rb, line 161 161: def flock_sh 162: flock LOCK_SH 163: yield 164: ensure 165: flock LOCK_UN 166: end
Disabled; run with --debug to generate this.
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