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141 lines
4.6 KiB
141 lines
4.6 KiB
// REQUIRES: darwin
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// Test the online merging mode (%m) along with continuous mode (%c).
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//
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// Create & cd into a temporary directory.
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// RUN: rm -rf %t.dir && mkdir -p %t.dir && cd %t.dir
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//
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// Create two DSOs and a driver program that uses them.
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// RUN: echo "void dso1(void) {}" > dso1.c
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// RUN: echo "void dso2(void) {}" > dso2.c
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// RUN: %clang_pgogen -dynamiclib -o %t.dir/dso1.dylib dso1.c -mllvm -instrprof-atomic-counter-update-all=1
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// RUN: %clang_pgogen -dynamiclib -o %t.dir/dso2.dylib dso2.c -mllvm -instrprof-atomic-counter-update-all=1
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// RUN: %clang_pgogen -o main.exe %s %t.dir/dso1.dylib %t.dir/dso2.dylib -mllvm -instrprof-atomic-counter-update-all=1
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//
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// === Round 1 ===
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// Test merging+continuous mode without any file contention.
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//
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// RUN: env LLVM_PROFILE_FILE="%t.dir/profdir/%m%c.profraw" %run %t.dir/main.exe nospawn
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// RUN: llvm-profdata merge -o %t.profdata %t.dir/profdir
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// RUN: llvm-profdata show --counts --all-functions %t.profdata | FileCheck %s -check-prefix=ROUND1
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// ROUND1-LABEL: Counters:
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// ROUND1-DAG: dso1:
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// ROUND1-DAG: Hash: 0x{{.*}}
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// ROUND1-DAG: Counters: 1
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// ROUND1-DAG: Block counts: [1]
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// ROUND1-DAG: dso2:
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// ROUND1-DAG: Hash: 0x{{.*}}
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// ROUND1-DAG: Counters: 1
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// ROUND1-DAG: Block counts: [1]
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// ROUND1-DAG: main:
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// ROUND1-DAG: Hash: 0x{{.*}}
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// ROUND1-LABEL: Instrumentation level: IR
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// ROUND1-NEXT: Functions shown: 3
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// ROUND1-NEXT: Total functions: 3
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// ROUND1-NEXT: Maximum function count: 1
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// ROUND1-NEXT: Maximum internal block count: 1
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//
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// === Round 2 ===
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// Test merging+continuous mode with some file contention.
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//
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// RUN: env LLVM_PROFILE_FILE="%t.dir/profdir/%m%c.profraw" %run %t.dir/main.exe spawn 'LLVM_PROFILE_FILE=%t.dir/profdir/%m%c.profraw'
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// RUN: llvm-profdata merge -o %t.profdata %t.dir/profdir
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// RUN: llvm-profdata show --counts --all-functions %t.profdata | FileCheck %s -check-prefix=ROUND2
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// ROUND2-LABEL: Counters:
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// ROUND2-DAG: dso1:
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// ROUND2-DAG: Hash: 0x{{.*}}
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// ROUND2-DAG: Counters: 1
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// ROUND2-DAG: Block counts: [97]
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// ROUND2-DAG: dso2:
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// ROUND2-DAG: Hash: 0x{{.*}}
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// ROUND2-DAG: Counters: 1
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// ROUND2-DAG: Block counts: [97]
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// ROUND2-DAG: main:
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// ROUND2-DAG: Hash: 0x{{.*}}
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// ROUND2-LABEL: Instrumentation level: IR
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// ROUND2-NEXT: Functions shown: 3
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// ROUND2-NEXT: Total functions: 3
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// ROUND2-NEXT: Maximum function count: 97
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// ROUND2-NEXT: Maximum internal block count: 33
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#include <spawn.h>
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#include <sys/wait.h>
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#include <sys/errno.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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const int num_child_procs_to_spawn = 32;
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extern int __llvm_profile_is_continuous_mode_enabled(void);
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extern char *__llvm_profile_get_filename(void);
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void dso1(void);
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void dso2(void);
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// Change to "#define" for debug output.
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#undef DEBUG_TEST
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#ifdef DEBUG_TEST
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#define DEBUG(...) fprintf(stderr, __VA_ARGS__);
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#else
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#define DEBUG(...)
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#endif
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int main(int argc, char *const argv[]) {
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if (strcmp(argv[1], "nospawn") == 0) {
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DEBUG("Hello from child (pid = %d, cont-mode-enabled = %d, profile = %s).\n",
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getpid(), __llvm_profile_is_continuous_mode_enabled(), __llvm_profile_get_filename());
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dso1();
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dso2();
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return 0;
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} else if (strcmp(argv[1], "spawn") == 0) {
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// This is the start of Round 2.
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// Expect Counts[dsoX] = 1, as this was the state at the end of Round 1.
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int I;
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pid_t child_pids[num_child_procs_to_spawn];
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char *const child_argv[] = {argv[0], "nospawn", NULL};
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char *const child_envp[] = {argv[2], NULL};
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for (I = 0; I < num_child_procs_to_spawn; ++I) {
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dso1(); // Counts[dsoX] += 2 * num_child_procs_to_spawn
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dso2();
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DEBUG("Spawning child with argv = {%s, %s, NULL} and envp = {%s, NULL}\n",
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child_argv[0], child_argv[1], child_envp[0]);
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int ret = posix_spawn(&child_pids[I], argv[0], NULL, NULL, child_argv,
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child_envp);
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if (ret != 0) {
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fprintf(stderr, "Child %d could not be spawned: ret = %d, msg = %s\n",
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I, ret, strerror(ret));
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return 1;
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}
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DEBUG("Spawned child %d (pid = %d).\n", I, child_pids[I]);
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}
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for (I = 0; I < num_child_procs_to_spawn; ++I) {
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dso1(); // Counts[dsoX] += num_child_procs_to_spawn
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dso2();
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int status;
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waitpid(child_pids[I], &status, 0);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
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fprintf(stderr, "Child %d did not exit with code 0.\n", I);
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return 1;
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}
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}
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// At the end of Round 2, we have:
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// Counts[dsoX] = 1 + (2 * num_child_procs_to_spawn) + num_child_procs_to_spawn
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// = 97
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return 0;
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}
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return 1;
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}
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