From fc22b3d6507c6745911b9dfcc68f1e665ae13dbc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:43:11 +0200 Subject: Adding upstream version 4.22.0. Signed-off-by: Daniel Baumann --- upstream/debian-bookworm/man3/profil.3 | 95 ++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 upstream/debian-bookworm/man3/profil.3 (limited to 'upstream/debian-bookworm/man3/profil.3') diff --git a/upstream/debian-bookworm/man3/profil.3 b/upstream/debian-bookworm/man3/profil.3 new file mode 100644 index 00000000..b9ddbaee --- /dev/null +++ b/upstream/debian-bookworm/man3/profil.3 @@ -0,0 +1,95 @@ +'\" t +.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" Modified Fri Jun 23 01:35:19 1995 Andries Brouwer +.\" (prompted by Bas V. de Bakker ) +.\" Corrected (and moved to man3), 980612, aeb +.TH profil 3 2022-12-15 "Linux man-pages 6.03" +.SH NAME +profil \- execution time profile +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include +.PP +.BI "int profil(unsigned short *" buf ", size_t " bufsiz , +.BI " size_t " offset ", unsigned int " scale ); +.PP +.fi +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR profil (): +.nf + Since glibc 2.21: +.\" commit 266865c0e7b79d4196e2cc393693463f03c90bd8 + _DEFAULT_SOURCE + In glibc 2.19 and 2.20: + _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) + Up to and including glibc 2.19: + _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) +.fi +.SH DESCRIPTION +This routine provides a means to find out in what areas your program +spends most of its time. +The argument +.I buf +points to +.I bufsiz +bytes of core. +Every virtual 10 milliseconds, the user's program counter (PC) +is examined: +.I offset +is subtracted and the result is multiplied by +.I scale +and divided by 65536. +If the resulting value is less than +.IR bufsiz , +then the corresponding entry in +.I buf +is incremented. +If +.I buf +is NULL, profiling is disabled. +.SH RETURN VALUE +Zero is always returned. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.ad l +.nh +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.BR profil () +T} Thread safety MT-Unsafe +.TE +.hy +.ad +.sp 1 +.SH STANDARDS +Similar to a call in SVr4 (but not POSIX.1). +.SH BUGS +.BR profil () +cannot be used on a program that also uses +.B ITIMER_PROF +interval timers (see +.BR setitimer (2)). +.PP +True kernel profiling provides more accurate results. +.\" Libc 4.4 contained a kernel patch providing a system call profil. +.SH SEE ALSO +.BR gprof (1), +.BR sprof (1), +.BR setitimer (2), +.BR sigaction (2), +.BR signal (2) -- cgit v1.2.3