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Diffstat (limited to 'winsup/cygwin/profil.c')
-rw-r--r--winsup/cygwin/profil.c173
1 files changed, 0 insertions, 173 deletions
diff --git a/winsup/cygwin/profil.c b/winsup/cygwin/profil.c
deleted file mode 100644
index 956519b4e..000000000
--- a/winsup/cygwin/profil.c
+++ /dev/null
@@ -1,173 +0,0 @@
-/* profil.c -- win32 profil.c equivalent
-
- Copyright 1998 Cygnus Solutions.
-
- This file is part of Cygwin.
-
- This software is a copyrighted work licensed under the terms of the
- Cygwin license. Please consult the file "CYGWIN_LICENSE" for
- details. */
-
-#include <windows.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <errno.h>
-#include <math.h>
-
-#include <profil.h>
-
-#define SLEEPTIME (1000 / PROF_HZ)
-
-/* global profinfo for profil() call */
-static struct profinfo prof;
-
-/* Get the pc for thread THR */
-
-static u_long
-get_thrpc (HANDLE thr)
-{
- CONTEXT ctx;
- u_long pc;
- int res;
-
- res = SuspendThread (thr);
- if (res == -1)
- return (u_long) - 1;
- ctx.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
- pc = (u_long) - 1;
- if (GetThreadContext (thr, &ctx))
- pc = ctx.Eip;
- ResumeThread (thr);
- return pc;
-}
-
-/* Display cell of profile buffer */
-#if 0
-static void
-print_prof (struct profinfo *p)
-{
- printf ("profthr %x\ttarget thr %x\n", p->profthr, p->targthr);
- printf ("pc: %x - %x\n", p->lowpc, p->highpc);
- printf ("scale: %x\n", p->scale);
- return;
-}
-#endif
-
-/* Everytime we wake up use the main thread pc to hash into the cell in the
- profile buffer ARG. */
-
-static DWORD CALLBACK
-profthr_func (LPVOID arg)
-{
- struct profinfo *p = (struct profinfo *) arg;
- u_long pc, idx;
-
- for (;;)
- {
- pc = (u_long) get_thrpc (p->targthr);
- if (pc >= p->lowpc && pc < p->highpc)
- {
- idx = PROFIDX (pc, p->lowpc, p->scale);
- p->counter[idx]++;
- }
-#if 0
- print_prof (p);
-#endif
- Sleep (SLEEPTIME);
- }
- return 0;
-}
-
-/* Stop profiling to the profiling buffer pointed to by P. */
-
-static int
-profile_off (struct profinfo *p)
-{
- if (p->profthr)
- {
- TerminateThread (p->profthr, 0);
- CloseHandle (p->profthr);
- }
- if (p->targthr)
- CloseHandle (p->targthr);
- return 0;
-}
-
-/* Create a timer thread and pass it a pointer P to the profiling buffer. */
-
-static int
-profile_on (struct profinfo *p)
-{
- int thrid;
-
- /* get handle for this thread */
- if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
- GetCurrentProcess (), &p->targthr, 0, FALSE,
- DUPLICATE_SAME_ACCESS))
- {
- errno = ESRCH;
- return -1;
- }
-
- p->profthr = CreateThread (0, 0, profthr_func, (void *) p, 0, &thrid);
- if (!p->profthr)
- {
- CloseHandle (p->targthr);
- p->targthr = 0;
- errno = EAGAIN;
- return -1;
- }
- return 0;
-}
-
-/*
- * start or stop profiling
- *
- * profiling goes into the SAMPLES buffer of size SIZE (which is treated
- * as an array of u_shorts of size size/2)
- *
- * each bin represents a range of pc addresses from OFFSET. The number
- * of pc addresses in a bin depends on SCALE. (A scale of 65536 maps
- * each bin to two addresses, A scale of 32768 maps each bin to 4 addresses,
- * a scale of 1 maps each bin to 128k addreses). Scale may be 1 - 65536,
- * or zero to turn off profiling
- */
-int
-profile_ctl (struct profinfo * p, char *samples, size_t size,
- u_long offset, u_int scale)
-{
- u_long maxbin;
-
- if (scale > 65536)
- {
- errno = EINVAL;
- return -1;
- }
-
- profile_off (p);
- if (scale)
- {
- memset (samples, 0, size);
- memset (p, 0, sizeof *p);
- maxbin = size >> 1;
- prof.counter = (u_short *) samples;
- prof.lowpc = offset;
- prof.highpc = PROFADDR (maxbin, offset, scale);
- prof.scale = scale;
-
- return profile_on (p);
- }
- return 0;
-}
-
-/* Equivalent to unix profil()
- Every SLEEPTIME interval, the user's program counter (PC) is examined:
- offset is subtracted and the result is multiplied by scale.
- The word pointed to by this address is incremented. Buf is unused. */
-
-int
-profil (char *samples, size_t size, u_long offset, u_int scale)
-{
- return profile_ctl (&prof, samples, size, offset, scale);
-}
-