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Rev 3495 Rev 3496
Line 89... Line 89...
89 
    ipc_cleanup_call_list(&TASK->kernel_box.dispatched_calls);
 89 
    ipc_cleanup_call_list(&TASK->kernel_box.dispatched_calls);
90 
    ipc_cleanup_call_list(&TASK->kernel_box.calls);
 90 
    ipc_cleanup_call_list(&TASK->kernel_box.calls);
91 
    spinlock_unlock(&TASK->kernel_box.lock);
 91 
    spinlock_unlock(&TASK->kernel_box.lock);
92 
}
 92 
}
93 
 
 93 
 
- 
 
 94 
/** Handle hangup message in kbox.
- 
 
 95 
 *
- 
 
 96 
 * @param call  The IPC_M_PHONE_HUNGUP call structure.
- 
 
 97 
 * @param last  Output, the function stores @c true here if
- 
 
 98 
 *      this was the last phone, @c false otherwise.
- 
 
 99 
 **/
- 
 
 100 
static void kbox_proc_phone_hungup(call_t *call, bool *last)
- 
 
 101 
{
- 
 
 102 
    ipl_t ipl;
- 
 
 103 
 
- 
 
 104 
    LOG("kbox_proc_phone_hungup()\n");
- 
 
 105 
 
- 
 
 106 
    /* Was it our debugger, who hung up? */
- 
 
 107 
    if (call->sender == TASK->udebug.debugger) {
- 
 
 108 
        /* Terminate debugging session (if any) */
- 
 
 109 
        LOG("kbox: terminate debug session\n");
- 
 
 110 
        ipl = interrupts_disable();
- 
 
 111 
        spinlock_lock(&TASK->lock);
- 
 
 112 
        udebug_task_cleanup(TASK);
- 
 
 113 
        spinlock_unlock(&TASK->lock);
- 
 
 114 
        interrupts_restore(ipl);
- 
 
 115 
    } else {
- 
 
 116 
        LOG("kbox: was not debugger\n");
- 
 
 117 
    }
- 
 
 118 
 
- 
 
 119 
    LOG("kbox: continue with hangup message\n");
- 
 
 120 
    IPC_SET_RETVAL(call->data, 0);
- 
 
 121 
    ipc_answer(&TASK->kernel_box, call);
- 
 
 122 
 
- 
 
 123 
    ipl = interrupts_disable();
- 
 
 124 
    spinlock_lock(&TASK->lock);
- 
 
 125 
    spinlock_lock(&TASK->answerbox.lock);
- 
 
 126 
    if (list_empty(&TASK->answerbox.connected_phones)) {
- 
 
 127 
        /*
- 
 
 128 
         * Last phone has been disconnected. Detach this thread so it
- 
 
 129 
         * gets freed and signal to the caller.
- 
 
 130 
         */
- 
 
 131 
 
- 
 
 132 
        /* Only detach kbox thread unless already terminating. */
- 
 
 133 
        mutex_lock(&TASK->kb_cleanup_lock);
- 
 
 134 
        if (&TASK->kb_finished == false) {
- 
 
 135 
            /* Detach kbox thread so it gets freed from memory. */
- 
 
 136 
            thread_detach(TASK->kb_thread);
- 
 
 137 
            TASK->kb_thread = NULL;
- 
 
 138 
        }
- 
 
 139 
        mutex_unlock(&TASK->kb_cleanup_lock);
94 
 
 140 
 
- 
 
 141 
        LOG("phone list is empty\n");
- 
 
 142 
        *last = true;
- 
 
 143 
    } else {
- 
 
 144 
        *last = false;
- 
 
 145 
    }
- 
 
 146 
 
- 
 
 147 
    spinlock_unlock(&TASK->answerbox.lock);
- 
 
 148 
    spinlock_unlock(&TASK->lock);
- 
 
 149 
    interrupts_restore(ipl);
- 
 
 150 
}
- 
 
 151 
 
- 
 
 152 
/** Implementing function for the kbox thread.
- 
 
 153 
 *
- 
 
 154 
 * This function listens for debug requests. It terminates
- 
 
 155 
 * when all phones are disconnected from the kbox.
- 
 
 156 
 *
- 
 
 157 
 * @param arg   Ignored.
- 
 
 158 
 */
95 
static void kbox_thread_proc(void *arg)
 159 
static void kbox_thread_proc(void *arg)
96 
{
 160 
{
97 
    call_t *call;
 161 
    call_t *call;
98 
    int method;
 - 
 
99 
    bool done;
 162 
    bool done;
100 
    ipl_t ipl;
 - 
 
101 
 
 163 
 
102 
    (void)arg;
 164 
    (void)arg;
103 
    LOG("kbox_thread_proc()\n");
 165 
    LOG("kbox_thread_proc()\n");
104 
    done = false;
 166 
    done = false;
105 
 
 167 
 
106 
    while (!done) {
 168 
    while (!done) {
107 
        call = ipc_wait_for_call(&TASK->kernel_box, SYNCH_NO_TIMEOUT,
 169 
        call = ipc_wait_for_call(&TASK->kernel_box, SYNCH_NO_TIMEOUT,
108 
            SYNCH_FLAGS_NONE);
 170 
            SYNCH_FLAGS_NONE);
109 
 
 171 
 
110 
        if (call != NULL) {
 172 
        if (call == NULL)
- 
 
 173 
            continue;   /* Try again. */
- 
 
 174 
 
111 
            method = IPC_GET_METHOD(call->data);
 175 
        switch (IPC_GET_METHOD(call->data)) {
112 
 
 176 
 
113 
            if (method == IPC_M_DEBUG_ALL) {
 177 
        case IPC_M_DEBUG_ALL:
- 
 
 178 
            /* Handle debug call. */
114 
                udebug_call_receive(call);
 179 
            udebug_call_receive(call);
115 
            }
 180 
            break;
116 
 
 181 
 
117 
            if (method == IPC_M_PHONE_HUNGUP) {
 182 
        case IPC_M_PHONE_HUNGUP:
118 
                LOG("kbox: handle hangup message\n");
 - 
 
119 
 
 - 
 
120 
                /* Was it our debugger, who hung up? */
 - 
 
121 
                if (call->sender == TASK->udebug.debugger) {
 - 
 
122 
                    /* Terminate debugging session (if any) */
 - 
 
123 
                    LOG("kbox: terminate debug session\n");
 - 
 
124 
                    ipl = interrupts_disable();
 - 
 
125 
                    spinlock_lock(&TASK->lock);
 - 
 
126 
                    udebug_task_cleanup(TASK);
 - 
 
127 
                    spinlock_unlock(&TASK->lock);
 - 
 
128 
                    interrupts_restore(ipl);
 - 
 
129 
                } else {
 - 
 
130 
                    LOG("kbox: was not debugger\n");
 - 
 
131 
                }
 183 
            /*
132 
 
 - 
 
133 
                LOG("kbox: continue with hangup message\n");
 184 
             * Process the hangup call. If this was the last
134 
                IPC_SET_RETVAL(call->data, 0);
 - 
 
135 
                ipc_answer(&TASK->kernel_box, call);
 185 
             * phone, done will be set to true and the
136 
 
 - 
 
137 
                ipl = interrupts_disable();
 186 
             * while loop will terminate.
138 
                spinlock_lock(&TASK->lock);
 - 
 
139 
                spinlock_lock(&TASK->answerbox.lock);
 - 
 
140 
                if (list_empty(&TASK->answerbox.connected_phones)) {
 - 
 
141 
                    /*
 187 
             */
142 
                     * Last phone has been disconnected.
 188 
            kbox_proc_phone_hungup(call, &done);
143 
                     * Detach this thread so it gets
 - 
 
144 
                     * freed and terminate.
 - 
 
145 
                     */
 189 
            break;
146 
 
 190 
 
147 
                    /* Only need to detach thread unless already terminating. */
 - 
 
148 
                    mutex_lock(&TASK->kb_cleanup_lock);
 - 
 
149 
                    if (&TASK->kb_finished == false) {
 - 
 
150 
                        /* Detach thread so it gets freed. */
 - 
 
151 
                        thread_detach(TASK->kb_thread);
 - 
 
152 
                        TASK->kb_thread = NULL;
 - 
 
153 
                    }
 191 
        default:
154 
                    mutex_unlock(&TASK->kb_cleanup_lock);
 - 
 
155 
                    done = true;
 192 
            /* Ignore */
156 
                    LOG("phone list is empty\n");
 - 
 
157 
                }
 193 
            break;
158 
                spinlock_unlock(&TASK->answerbox.lock);
 - 
 
159 
                spinlock_unlock(&TASK->lock);
 - 
 
160 
                interrupts_restore(ipl);
 - 
 
161 
            }
 - 
 
162 
        }
 194 
        }
163 
    }
 195 
    }
164 
 
 196 
 
165 
    LOG("kbox: finished\n");
 197 
    LOG("kbox: finished\n");
166 
}
 198 
}