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OpenSolaris 2009.06 - man page for whocalls (opensolaris section 1)

whocalls(1)							   User Commands						       whocalls(1)

whocalls - report on the calls to a specific procedure
whocalls [-l wholib] [-s] funcname executable [arguments]...
whocalls is a simple example of a utility based on the Link-Auditing functionality of that permits the tracking of a given func- tion call. See the Linker and Libraries Guide for a detailed description of the Link-Auditing mechanism. The executable is run as normal with any associated arguments. Each time the procedure funcname is called, both the arguments to that procedure and a stack trace are dis- played on standard output.
The following options are supported: -l wholib Specifies an alternate Link-Auditing library to use. -s When available, examines and uses the .symtab symbol table for local symbols. This is a little more expensive than using the .dynsym symbol table, but can produce more detailed stack trace information.
Example 1 Tracking Function Calls The following example tracks the calls to printf() made by a simple helloworld program: example% whocalls printf helloworld printf(0x106e4, 0xef625310, 0xef621ba8) helloworld:main+0x10 helloworld:_start+0x5c Hello World
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWtoo | +-----------------------------+-----------------------------+
SEE ALSO, sotruss(1), attributes(5) Linker and Libraries Guide SunOS 5.11 3 Jul 2007 whocalls(1)