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From: "Alex Bennée" <alex.bennee@linaro.org>
To: peter.maydell@linaro.org
Cc: "Alex Bennée" <alex.bennee@linaro.org>,
	qemu-devel@nongnu.org, "Nikolay Igotti" <igotti@gmail.com>
Subject: [PULL 12/12] tests/tcg: add new threadcount test
Date: Wed, 27 May 2020 15:54:55 +0100	[thread overview]
Message-ID: <20200527145455.2550-13-alex.bennee@linaro.org> (raw)
In-Reply-To: <20200527145455.2550-1-alex.bennee@linaro.org>

Based on the original testcase by Nikolay Igotti.

Message-ID: <CAEme+7GLKg_dNsHizzTKDymX9HyD+Ph2iZ=WKhOw2XG+zhViXg@mail.gmail.com>
Signed-off-by: Nikolay Igotti <igotti@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

Message-Id: <20200520140541.30256-15-alex.bennee@linaro.org>

diff --git a/tests/tcg/multiarch/threadcount.c b/tests/tcg/multiarch/threadcount.c
new file mode 100644
index 00000000000..545a1c81466
--- /dev/null
+++ b/tests/tcg/multiarch/threadcount.c
@@ -0,0 +1,64 @@
+/*
+ * Thread Exerciser
+ *
+ * Unlike testthread which is mainly concerned about testing thread
+ * semantics this test is used to exercise the thread creation and
+ * accounting. A version of this test found a problem with clashing
+ * cpu_indexes which caused a break in plugin handling.
+ *
+ * Based on the original test case by Nikolay Igotti.
+ *
+ * Copyright (c) 2020 Linaro Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+
+int max_threads = 10;
+
+typedef struct {
+    int delay;
+} ThreadArg;
+
+static void *thread_fn(void* varg)
+{
+    ThreadArg *arg = varg;
+    usleep(arg->delay);
+    free(arg);
+    return NULL;
+}
+
+int main(int argc, char **argv)
+{
+    int i;
+    pthread_t *threads;
+
+    if (argc > 1) {
+        max_threads = atoi(argv[1]);
+    }
+    threads = calloc(sizeof(pthread_t), max_threads);
+
+    for (i = 0; i < max_threads; i++) {
+        ThreadArg *arg = calloc(sizeof(ThreadArg), 1);
+        arg->delay = i * 100;
+        pthread_create(threads + i, NULL, thread_fn, arg);
+    }
+
+    printf("Created %d threads\n", max_threads);
+
+    /* sleep until roughly half the threads have "finished" */
+    usleep(max_threads * 50);
+
+    for (i = 0; i < max_threads; i++) {
+        pthread_join(threads[i], NULL);
+    }
+
+    printf("Done\n");
+
+    return 0;
+}
diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target
index 51fb75ecfdd..cb49cc9ccb2 100644
--- a/tests/tcg/multiarch/Makefile.target
+++ b/tests/tcg/multiarch/Makefile.target
@@ -28,6 +28,8 @@ run-float_%: float_%
 
 testthread: LDFLAGS+=-lpthread
 
+threadcount: LDFLAGS+=-lpthread
+
 # We define the runner for test-mmap after the individual
 # architectures have defined their supported pages sizes. If no
 # additional page sizes are defined we only run the default test.
-- 
2.20.1



  parent reply	other threads:[~2020-05-27 15:06 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-27 14:54 [PULL 00/12] testing and plugin fixes Alex Bennée
2020-05-27 14:54 ` [PULL 01/12] configure: add alternate binary for genisoimage Alex Bennée
2020-05-27 14:54 ` [PULL 02/12] tests/vm: pass --genisoimage to basevm script Alex Bennée
2020-05-27 14:54 ` [PULL 03/12] travis.yml: Use clang++ in the Clang tests Alex Bennée
2020-05-27 14:54 ` [PULL 04/12] tests/tcg: fix invocation of the memory record/replay tests Alex Bennée
2020-05-27 14:54 ` [PULL 05/12] tests/fp: enable extf80_le_quite tests Alex Bennée
2020-05-27 14:54 ` [PULL 06/12] tests/fp: split and audit the conversion tests Alex Bennée
2020-05-27 14:54 ` [PULL 07/12] tests/tcg: better detect confused gdb which can't connect Alex Bennée
2020-05-27 14:54 ` [PULL 08/12] tests/docker: add debian11 base image Alex Bennée
2020-05-27 14:54 ` [PULL 09/12] tests/docker: use a gcc-10 based image for arm64 tests Alex Bennée
2020-05-27 14:54 ` [PULL 10/12] cpus-common: ensure auto-assigned cpu_indexes don't clash Alex Bennée
2020-05-27 14:54 ` [PULL 11/12] linux-user: properly "unrealize" vCPU object Alex Bennée
2020-05-27 14:54 ` Alex Bennée [this message]
2020-05-28 13:54 ` [PULL 00/12] testing and plugin fixes Peter Maydell
2020-05-28 14:16   ` Alex Bennée
2020-05-28 14:57   ` Alex Bennée
2020-05-28 15:09     ` Peter Maydell
2020-05-28 15:18       ` Philippe Mathieu-Daudé
2020-05-28 15:20         ` Peter Maydell
2020-05-28 15:26           ` Philippe Mathieu-Daudé
2020-05-28 16:07             ` Peter Maydell
2020-05-28 17:19           ` Alex Bennée
2020-05-28 15:38         ` Gerd Hoffmann
2020-05-29 18:25 ` Peter Maydell

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