ProfileSample

ProfileSample

Command Index · Language Features · Other

ProfileSample:Void file:String

Parameter	Mode	Type	Default	Description
file	In	String	required	The file that receives the samples, or an empty string to stop.

Description

Starts or stops recording where the program spends its time, like the environment variable BLITZLLVM_PROFILE_SAMPLE (which starts it with the program). The program is sampled every millisecond and the addresses go to the file; with -g or -d as well, <file>.stacks also receives the call stacks. See Environment-Variables for the files. An empty name stops sampling and writes what is left. Windows only, and only in a program that was compiled with --profile: everywhere else this command does nothing.

Differences

• This is a BlitzLLVM extension: the original has no such command.

Examples

ProfileSample "sample.bin"
; ... the part of the program that is slow ...
ProfileSample ""

Related Commands

ProfileBegin, ProfileEnable, ProfileEnd, ProfileFlipCount, ProfileFPS, ProfileItemCount, ProfileItemName, ProfileOutput

Command Index · Language Features · Other