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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - GLX context memory leak if context was bound to drawable on thread exit"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73392">73392</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>GLX context memory leak if context was bound to drawable on thread exit
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ibragimovrinat@mail.ru
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>9.2
</td>
</tr>
<tr>
<th>Component</th>
<td>GLX
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
<p>
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<pre>glXDestroyContext leaks memory if context was bound and there was no
glXMakeCurrent call before thread termination.
Here is sample code for reproduction.
// gcc glXDestroyContext-memleak.c -std=gnu99 -lpthread -lGL -lX11
#include <pthread.h>
#include <GL/glx.h>
#include <unistd.h>
GLXContext glc;
GLXContext root_glc;
Display *dpy;
XVisualInfo *xvi;
void *thread_func1(void *p)
{
Window root_wnd = XDefaultRootWindow(dpy);
glc = glXCreateContext(dpy, xvi, NULL, GL_TRUE);
glXMakeCurrent(dpy, root_wnd, glc);
glXDestroyContext(dpy, glc);
return NULL;
}
int main(void) {
GLint att[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None };
dpy = XOpenDisplay(NULL);
xvi = glXChooseVisual(dpy, 0, att);
for (int k = 0; k < 30000; k ++) {
pthread_t t;
pthread_create(&t, NULL, thread_func1, NULL);
pthread_join(t, NULL);
sleep(1);
}
return 0;
}</pre>
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