forked from Imagelibrary/binutils-gdb
d01e823438
This updates the copyright headers to include 2025. I did this by running gdb/copyright.py and then manually modifying a few files as noted by the script. Approved-By: Eli Zaretskii <eliz@gnu.org>
114 lines
3.0 KiB
C++
114 lines
3.0 KiB
C++
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2023-2025 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <hip/hip_runtime.h>
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#define CHECK(cmd) \
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{ \
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hipError_t error = cmd; \
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if (error != hipSuccess) \
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{ \
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fprintf (stderr, "error: '%s'(%d) at %s:%d\n", \
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hipGetErrorString (error), error, __FILE__, __LINE__); \
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exit (EXIT_FAILURE); \
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} \
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}
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__global__ void
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kern ()
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{
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asm ("s_sleep 1");
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}
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/* Spawn one child process per detected GPU. */
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static int
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parent (int argc, char **argv)
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{
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/* Identify how many GPUs we have, and spawn one child for each. */
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int num_devices;
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CHECK (hipGetDeviceCount (&num_devices));
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/* Break here. */
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for (int i = 0; i < num_devices; i++)
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{
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char n[32] = {};
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snprintf (n, sizeof (n), "%d", i);
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pid_t pid = fork ();
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if (pid == -1)
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{
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perror ("Fork failed");
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return -1;
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}
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if (pid == 0)
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{
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/* Exec to force the child to re-initialize the ROCm runtime. */
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if (execl (argv[0], argv[0], n, nullptr) == -1)
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{
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perror ("Failed to exec");
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return -1;
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}
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}
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}
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/* Wait for all children. */
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while (true)
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{
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int ws;
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pid_t ret = waitpid (-1, &ws, 0);
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if (ret == -1 && errno == ECHILD)
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break;
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}
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/* Last break here. */
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return 0;
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}
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static int
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child (int argc, char **argv)
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{
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int dev_number;
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if (sscanf (argv[1], "%d", &dev_number) != 1)
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{
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fprintf (stderr, "Invalid argument \"%s\"\n", argv[1]);
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return -1;
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}
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CHECK (hipSetDevice (dev_number));
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kern<<<1, 1>>> ();
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CHECK (hipDeviceSynchronize ());
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return 0;
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}
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/* When called with no argument, identify how many AMDGPU devices are
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available on the system and spawn one worker process per GPU. If a
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command-line argument is provided, it is the index of the GPU to use. */
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int
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main (int argc, char **argv)
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{
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if (argc <= 1)
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return parent (argc, argv);
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else
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return child (argc, argv);
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}
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