| [10056] | 1 | /* $Id: PrfTstProcess-3.c,v 1.1 2003-05-01 11:20:50 bird Exp $
|
|---|
| 2 | *
|
|---|
| 3 | * Test program which checks how long it takes to execute another process.
|
|---|
| 4 | *
|
|---|
| 5 | * Copyright (c) 2001-2003 knut st. osmundsen (bird@anduin.net)
|
|---|
| 6 | *
|
|---|
| 7 | * Project Odin Software License can be found in LICENSE.TXT
|
|---|
| 8 | *
|
|---|
| 9 | */
|
|---|
| 10 |
|
|---|
| 11 | /** @design Process Startup and Termination cost.
|
|---|
| 12 | *
|
|---|
| 13 | * The purpose is to compare the cost of creating a child process on different
|
|---|
| 14 | * platforms; revealing which is the best ones...
|
|---|
| 15 | *
|
|---|
| 16 | * Later analysis on why will be done I hope...
|
|---|
| 17 | *
|
|---|
| 18 | *
|
|---|
| 19 | * @subsection Test Results
|
|---|
| 20 | *
|
|---|
| 21 | *
|
|---|
| 22 | * @subsection Compilation OS/2
|
|---|
| 23 | * Just as normal odin apps:<br>
|
|---|
| 24 | * wcl386 -d__OS2__=1 -bt=os2v2 /los2v2 -I%WATCOM\h\os2 PrfTstProcess-3.c
|
|---|
| 25 | * wcl386 -d__OS2__=1 -bt=os2v2 /los2v2 -I%WATCOM\h\os2 PrfTstProcess-3-child.c
|
|---|
| 26 | *
|
|---|
| 27 | * @subsection Complation NT
|
|---|
| 28 | * This works from OS/2 and NT:
|
|---|
| 29 | * wcl386 -d__WINNT__=1 -bt=nt /lnt -I%WATCOM\h\nt PrfTstProcess-3.c kernel32.lib
|
|---|
| 30 | * wcl386 -d__WINNT__=1 -bt=nt /lnt -I%WATCOM\h\nt PrfTstProcess-3-child.c
|
|---|
| 31 | *
|
|---|
| 32 | * Optimized:
|
|---|
| 33 | * Add -Otx
|
|---|
| 34 | *
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 | #include "PrfTiming.h"
|
|---|
| 38 |
|
|---|
| 39 | int main(int argc, char **argv)
|
|---|
| 40 | {
|
|---|
| 41 | long double rdCur;
|
|---|
| 42 | long double rdStart;
|
|---|
| 43 | long double rdEnd;
|
|---|
| 44 | unsigned cChilds;
|
|---|
| 45 | int pid;
|
|---|
| 46 | #ifdef __NOTPC__
|
|---|
| 47 | int status;
|
|---|
| 48 | #endif
|
|---|
| 49 | char szChild[256];
|
|---|
| 50 |
|
|---|
| 51 |
|
|---|
| 52 | /*
|
|---|
| 53 | * Mainloop.
|
|---|
| 54 | */
|
|---|
| 55 | strcpy(szChild, argv[0]);
|
|---|
| 56 | #ifdef __NOTPC__
|
|---|
| 57 | strcat(szChild, "-child");
|
|---|
| 58 | #else
|
|---|
| 59 | if (!stricmp(szChild + strlen(szChild) - 4, ".exe"))
|
|---|
| 60 | szChild[strlen(szChild) - 4] = '\0';
|
|---|
| 61 | strcat(szChild, "-child.exe");
|
|---|
| 62 | #endif
|
|---|
| 63 |
|
|---|
| 64 | cChilds = 0; /* child count */
|
|---|
| 65 | rdEnd = getHz() * 20.0; /* loop for 20 seconds */
|
|---|
| 66 | rdStart = rdCur = gettime();
|
|---|
| 67 | rdEnd += gettime();
|
|---|
| 68 | while (rdEnd > rdCur)
|
|---|
| 69 | {
|
|---|
| 70 | #ifndef __NOTPC__
|
|---|
| 71 | pid = spawnl(P_WAIT, szChild, szChild, "child", NULL); /* pid == 0 on success */
|
|---|
| 72 | #else
|
|---|
| 73 | pid = fork();
|
|---|
| 74 | if (pid == 0)
|
|---|
| 75 | {/* child code */
|
|---|
| 76 | execl(szChild, szChild, "child", NULL);
|
|---|
| 77 | fprintf(stderr, "we should NEVER be here!!\n");
|
|---|
| 78 | return 0;
|
|---|
| 79 | }
|
|---|
| 80 | #endif
|
|---|
| 81 |
|
|---|
| 82 | if (pid < 0)
|
|---|
| 83 | {
|
|---|
| 84 | fprintf(stderr, "Failed to spawn child '%s'\n", szChild);
|
|---|
| 85 | return 0;
|
|---|
| 86 | }
|
|---|
| 87 |
|
|---|
| 88 | #ifdef __NOTPC__
|
|---|
| 89 | if (pid > 0)
|
|---|
| 90 | pid = wait(&status);
|
|---|
| 91 | #endif
|
|---|
| 92 | cChilds++;
|
|---|
| 93 | rdCur = gettime();
|
|---|
| 94 | }
|
|---|
| 95 | printf("Spawned %d childs in %Lf seconds\n", cChilds, (rdCur - rdStart) / getHz());
|
|---|
| 96 | printSystemInfo();
|
|---|
| 97 | return 0;
|
|---|
| 98 | }
|
|---|
