1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* Tests clSetEventCallback()
Copyright (c) 2013 Ville Korhonen / Tampere University of Technology
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#include <CL/cl.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
void callback_function(cl_event event,
cl_int event_command_exec_status,
void *user_data)
{
printf("%s ", (const char *)user_data);
if(event_command_exec_status == CL_SUBMITTED)
printf("CL_SUBMITTED\n");
if(event_command_exec_status == CL_RUNNING)
printf("CL_RUNNING\n");
if(event_command_exec_status == CL_COMPLETE)
printf("CL_COMPLETE\n");
return;
}
char kernelASourceCode[] =
"kernel \n"
"void test_kernel(constant char* input) {\n"
" printf(\"%s\", input);\n"
"}\n";
int main()
{
size_t global_work_size[1] = { 1 }, local_work_size[1]= { 1 };
cl_int err;
cl_platform_id platforms[1];
cl_uint nplatforms;
cl_device_id devices[1]; // + 1 for duplicate test
cl_uint num_devices;
cl_program program = NULL;
cl_kernel kernel = NULL;
char input[] = "kernel in execution\n";
char *user_data = "Callback function: event status:";
cl_mem inputBuffer = NULL;
/* command queues */
cl_command_queue queue = NULL;
/* events */
cl_event an_event = NULL;
err = clGetPlatformIDs(1, platforms, &nplatforms);
if (err != CL_SUCCESS && !nplatforms)
return EXIT_FAILURE;
err = clGetDeviceIDs(platforms[0], CL_DEVICE_TYPE_ALL, 1,
devices, &num_devices);
if (err != CL_SUCCESS)
return EXIT_FAILURE;
cl_context context = clCreateContext(NULL, num_devices, devices, NULL,
NULL, &err);
if (err != CL_SUCCESS)
return EXIT_FAILURE;
err = clGetContextInfo(context, CL_CONTEXT_DEVICES,
sizeof(cl_device_id), devices, NULL);
if (err != CL_SUCCESS)
{
puts("clGetContextInfo call failed\n");
goto error;
}
queue = clCreateCommandQueue(context, devices[0], 0, NULL);
if (!queue)
{
puts("clCreateCommandQueue call failed\n");
goto error;
}
inputBuffer = clCreateBuffer(context,
CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
strlen (input)+1, (void *) input, &err);
if (inputBuffer == NULL)
{
printf("clCreateBuffer call failed err = %d\n", err);
goto error;
}
size_t kernel_size = strlen (kernelASourceCode);
char* kernel_buffer = kernelASourceCode;
program = clCreateProgramWithSource (context, 1,
(const char**)&kernel_buffer,
&kernel_size, &err);
if (err != CL_SUCCESS)
return EXIT_FAILURE;
err = clBuildProgram (program, num_devices, devices, NULL, NULL, NULL);
if (err != CL_SUCCESS)
return EXIT_FAILURE;
kernel = clCreateKernel (program, "test_kernel", NULL);
if (!kernel)
{
puts("clCreateKernel call failed\n");
goto error;
}
err = clSetKernelArg (kernel, 0, sizeof (cl_mem), &inputBuffer);
if (err)
{
puts("clSetKernelArg failed\n");
goto error;
}
/* launch kernel*/
err = clEnqueueNDRangeKernel (queue, kernel, 1, NULL, global_work_size,
local_work_size, 0, NULL, &an_event);
if (err != CL_SUCCESS)
{
puts("clEnqueueNDRangeKernel call failed\n");
goto error;
}
clSetEventCallback(an_event, CL_SUBMITTED, callback_function, user_data);
clSetEventCallback(an_event, CL_RUNNING, callback_function, user_data);
clSetEventCallback(an_event, CL_COMPLETE, callback_function, user_data);
clFinish(queue);
return EXIT_SUCCESS;
error:
return EXIT_FAILURE;
}
|
