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PGO API Support Overview

Profile Information Generation Support lets you control of the generation of profile information during the

instrumented execution phase of profile-guided optimizations. Normally, profile information is generated

by an instrumented application when it terminates by calling the standard exit() function. The functions

described in this section may be necessary in assuring that profile information is generated in the

following situations:

! when the instrumented application exits using a non-standard exit routine

! when instrumented application is a non-terminating application where exit() is never called

! when you want control of when the profile information is generated

This section includes descriptions of the functions and environment variable that comprise Profile

Information Generation Support. The functions are available by inserting #include <pgouser.h> at

the top of any source file where the functions may be used.

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