1/*
2 ** Copyright 2011, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 **     http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17#include <stdlib.h>
18#include <pthread.h>
19
20#include <cutils/log.h>
21#include <cutils/properties.h>
22
23#include <utils/CallStack.h>
24
25#include <EGL/egl.h>
26
27#include "egl_tls.h"
28
29
30namespace android {
31
32pthread_key_t egl_tls_t::sKey = -1;
33pthread_mutex_t egl_tls_t::sLockKey = PTHREAD_MUTEX_INITIALIZER;
34
35egl_tls_t::egl_tls_t()
36    : error(EGL_SUCCESS), ctx(0), logCallWithNoContext(EGL_TRUE) {
37}
38
39const char *egl_tls_t::egl_strerror(EGLint err) {
40    switch (err) {
41        case EGL_SUCCESS:               return "EGL_SUCCESS";
42        case EGL_NOT_INITIALIZED:       return "EGL_NOT_INITIALIZED";
43        case EGL_BAD_ACCESS:            return "EGL_BAD_ACCESS";
44        case EGL_BAD_ALLOC:             return "EGL_BAD_ALLOC";
45        case EGL_BAD_ATTRIBUTE:         return "EGL_BAD_ATTRIBUTE";
46        case EGL_BAD_CONFIG:            return "EGL_BAD_CONFIG";
47        case EGL_BAD_CONTEXT:           return "EGL_BAD_CONTEXT";
48        case EGL_BAD_CURRENT_SURFACE:   return "EGL_BAD_CURRENT_SURFACE";
49        case EGL_BAD_DISPLAY:           return "EGL_BAD_DISPLAY";
50        case EGL_BAD_MATCH:             return "EGL_BAD_MATCH";
51        case EGL_BAD_NATIVE_PIXMAP:     return "EGL_BAD_NATIVE_PIXMAP";
52        case EGL_BAD_NATIVE_WINDOW:     return "EGL_BAD_NATIVE_WINDOW";
53        case EGL_BAD_PARAMETER:         return "EGL_BAD_PARAMETER";
54        case EGL_BAD_SURFACE:           return "EGL_BAD_SURFACE";
55        case EGL_CONTEXT_LOST:          return "EGL_CONTEXT_LOST";
56        default: return "UNKNOWN";
57    }
58}
59
60void egl_tls_t::validateTLSKey()
61{
62    if (sKey == -1) {
63        pthread_mutex_lock(&sLockKey);
64        if (sKey == -1)
65            pthread_key_create(&sKey, NULL);
66        pthread_mutex_unlock(&sLockKey);
67    }
68}
69
70void egl_tls_t::setErrorEtcImpl(
71        const char* caller, int line, EGLint error, bool quiet) {
72    validateTLSKey();
73    egl_tls_t* tls = getTLS();
74    if (tls->error != error) {
75        if (!quiet) {
76            ALOGE("%s:%d error %x (%s)",
77                    caller, line, error, egl_strerror(error));
78            char value[PROPERTY_VALUE_MAX];
79            property_get("debug.egl.callstack", value, "0");
80            if (atoi(value)) {
81                CallStack stack;
82                stack.update();
83                stack.dump();
84            }
85        }
86        tls->error = error;
87    }
88}
89
90bool egl_tls_t::logNoContextCall() {
91    egl_tls_t* tls = getTLS();
92    if (tls->logCallWithNoContext == true) {
93        tls->logCallWithNoContext = false;
94        return true;
95    }
96    return false;
97}
98
99egl_tls_t* egl_tls_t::getTLS() {
100    egl_tls_t* tls = (egl_tls_t*)pthread_getspecific(sKey);
101    if (tls == 0) {
102        tls = new egl_tls_t;
103        pthread_setspecific(sKey, tls);
104    }
105    return tls;
106}
107
108void egl_tls_t::clearTLS() {
109    if (sKey != -1) {
110        egl_tls_t* tls = (egl_tls_t*)pthread_getspecific(sKey);
111        if (tls) {
112            delete tls;
113            pthread_setspecific(sKey, 0);
114        }
115    }
116}
117
118void egl_tls_t::clearError() {
119    // This must clear the error from all the underlying EGL implementations as
120    // well as the EGL wrapper layer.
121    eglGetError();
122}
123
124EGLint egl_tls_t::getError() {
125    if (sKey == -1)
126        return EGL_SUCCESS;
127    egl_tls_t* tls = (egl_tls_t*)pthread_getspecific(sKey);
128    if (!tls) return EGL_SUCCESS;
129    EGLint error = tls->error;
130    tls->error = EGL_SUCCESS;
131    return error;
132}
133
134void egl_tls_t::setContext(EGLContext ctx) {
135    validateTLSKey();
136    getTLS()->ctx = ctx;
137}
138
139EGLContext egl_tls_t::getContext() {
140    if (sKey == -1)
141        return EGL_NO_CONTEXT;
142    egl_tls_t* tls = (egl_tls_t *)pthread_getspecific(sKey);
143    if (!tls) return EGL_NO_CONTEXT;
144    return tls->ctx;
145}
146
147
148} // namespace android
149