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Line 43... Line 43...
43 
#include <udebug/udebug_ipc.h>
 43 
#include <udebug/udebug_ipc.h>
44 
#include <ipc/kbox.h>
 44 
#include <ipc/kbox.h>
45 
 
 45 
 
46 
void ipc_kbox_cleanup(void)
 46 
void ipc_kbox_cleanup(void)
47 
{
 47 
{
- 
 
 48 
    ipl_t ipl;
48 
    bool have_kb_thread;
 49 
    bool have_kb_thread;
49 
 
 50 
 
50 
    /* Only hold kb_cleanup_lock while setting kb_finished - this is enough */
 51 
    /* Only hold kb_cleanup_lock while setting kb_finished - this is enough */
51 
    mutex_lock(&TASK->kb_cleanup_lock);
 52 
    mutex_lock(&TASK->kb_cleanup_lock);
52 
    TASK->kb_finished = true;
 53 
    TASK->kb_finished = true;
Line 61... Line 62...
61 
     * notify_box causes a HANGUP message to be inserted for each
 62 
     * notify_box causes a HANGUP message to be inserted for each
62 
     * disconnected phone. This ensures the kbox thread is going to
 63 
     * disconnected phone. This ensures the kbox thread is going to
63 
     * wake up and terminate.
 64 
     * wake up and terminate.
64 
     */
 65 
     */
65 
    ipc_answerbox_slam_phones(&TASK->kernel_box, have_kb_thread);
 66 
    ipc_answerbox_slam_phones(&TASK->kernel_box, have_kb_thread);
- 
 
 67 
 
- 
 
 68 
    /*
- 
 
 69 
     * If the task was being debugged, clean up debugging session.
- 
 
 70 
     * This is necessarry as slamming the phones won't force
- 
 
 71 
     * kbox thread to clean it up since sender != debugger.
- 
 
 72 
     */
- 
 
 73 
    ipl = interrupts_disable();
- 
 
 74 
    spinlock_lock(&TASK->lock);
- 
 
 75 
    udebug_task_cleanup(TASK);
- 
 
 76 
    spinlock_unlock(&TASK->lock);
- 
 
 77 
    interrupts_restore(ipl);
66 
   
 78 
   
67 
    if (have_kb_thread) {
 79 
    if (have_kb_thread) {
68 
        LOG("join kb_thread..\n");
 80 
        LOG("join kb_thread..\n");
69 
        thread_join(TASK->kb_thread);
 81 
        thread_join(TASK->kb_thread);
70 
        thread_detach(TASK->kb_thread);
 82 
        thread_detach(TASK->kb_thread);
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77 
    ipc_cleanup_call_list(&TASK->kernel_box.dispatched_calls);
 89 
    ipc_cleanup_call_list(&TASK->kernel_box.dispatched_calls);
78 
    ipc_cleanup_call_list(&TASK->kernel_box.calls);
 90 
    ipc_cleanup_call_list(&TASK->kernel_box.calls);
79 
    spinlock_unlock(&TASK->kernel_box.lock);
 91 
    spinlock_unlock(&TASK->kernel_box.lock);
80 
}
 92 
}
81 
 
 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);
- 
 
 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 
}
82 
 
 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 
 */
83 
static void kbox_thread_proc(void *arg)
 159 
static void kbox_thread_proc(void *arg)
84 
{
 160 
{
85 
    call_t *call;
 161 
    call_t *call;
86 
    int method;
 - 
 
87 
    bool done;
 162 
    bool done;
88 
    ipl_t ipl;
 - 
 
89 
 
 163 
 
90 
    (void)arg;
 164 
    (void)arg;
91 
    LOG("kbox_thread_proc()\n");
 165 
    LOG("kbox_thread_proc()\n");
92 
    done = false;
 166 
    done = false;
93 
 
 167 
 
94 
    while (!done) {
 168 
    while (!done) {
95 
        call = ipc_wait_for_call(&TASK->kernel_box, SYNCH_NO_TIMEOUT,
 169 
        call = ipc_wait_for_call(&TASK->kernel_box, SYNCH_NO_TIMEOUT,
96 
            SYNCH_FLAGS_NONE);
 170 
            SYNCH_FLAGS_NONE);
97 
 
 171 
 
98 
        if (call != NULL) {
 172 
        if (call == NULL)
- 
 
 173 
            continue;   /* Try again. */
- 
 
 174 
 
99 
            method = IPC_GET_METHOD(call->data);
 175 
        switch (IPC_GET_METHOD(call->data)) {
100 
 
 176 
 
101 
            if (method == IPC_M_DEBUG_ALL) {
 177 
        case IPC_M_DEBUG_ALL:
- 
 
 178 
            /* Handle debug call. */
102 
                udebug_call_receive(call);
 179 
            udebug_call_receive(call);
103 
            }
 180 
            break;
104 
 
 181 
 
105 
            if (method == IPC_M_PHONE_HUNGUP) {
 182 
        case IPC_M_PHONE_HUNGUP:
106 
                LOG("kbox: handle hangup message\n");
 - 
 
107 
 
 183 
            /*
108 
                /* Was it our debugger, who hung up? */
 184 
             * Process the hangup call. If this was the last
109 
                if (call->sender == TASK->udebug.debugger) {
 - 
 
110 
                    /* Terminate debugging session (if any) */
 185 
             * phone, done will be set to true and the
111 
                    LOG("kbox: terminate debug session\n");
 - 
 
112 
                    ipl = interrupts_disable();
 186 
             * while loop will terminate.
113 
                    spinlock_lock(&TASK->lock);
 - 
 
114 
                    udebug_task_cleanup(TASK);
 - 
 
115 
                    spinlock_unlock(&TASK->lock);
 - 
 
116 
                    interrupts_restore(ipl);
 - 
 
117 
                } else {
 187 
             */
118 
                    LOG("kbox: was not debugger\n");
 188 
            kbox_proc_phone_hungup(call, &done);
119 
                }
 189 
            break;
120 
 
 - 
 
121 
                LOG("kbox: continue with hangup message\n");
 - 
 
122 
                IPC_SET_RETVAL(call->data, 0);
 - 
 
123 
                ipc_answer(&TASK->kernel_box, call);
 - 
 
124 
 
 190 
 
125 
                ipl = interrupts_disable();
 - 
 
126 
                spinlock_lock(&TASK->lock);
 - 
 
127 
                spinlock_lock(&TASK->answerbox.lock);
 - 
 
128 
                if (list_empty(&TASK->answerbox.connected_phones)) {
 - 
 
129 
                    /* Last phone has been disconnected */
 - 
 
130 
                    TASK->kb_thread = NULL;
 - 
 
131 
                    done = true;
 191 
        default:
132 
                    LOG("phone list is empty\n");
 - 
 
133 
                }
 - 
 
134 
                spinlock_unlock(&TASK->answerbox.lock);
 - 
 
135 
                spinlock_unlock(&TASK->lock);
 - 
 
136 
                interrupts_restore(ipl);
 192 
            /* Ignore */
137 
            }
 193 
            break;
138 
        }
 194 
        }
139 
    }
 195 
    }
140 
 
 196 
 
141 
    LOG("kbox: finished\n");
 197 
    LOG("kbox: finished\n");
142 
}
 198 
}