Changeset 1615 for trunk/src/emx/include/InnoTekLIBC/sharedpm.h

Timestamp:

Nov 6, 2004, 9:35:32 AM (21 years ago)

Author:

bird

Message:

signals are finally getting somewhere...

File:

• trunk/src/emx/include/InnoTekLIBC/sharedpm.h (modified) (4 diffs, 1 prop)

trunk/src/emx/include/InnoTekLIBC/sharedpm.h

@@ -109 +109 @@
 
 
+/** The maximum number of signals a process can have pending on other processes concurrently. */
+#define __LIBC_SPM_SIGNALS_MAX_SENT 48
+
 /**
  * Signal (queued).
@@ -118 +121 @@
     /** Pointer to the next signal. */
     struct __libc_SPMSignal    *pNext;
+    /** Sender process.
+     * This is used to decrement the cSigsSent count of the sender. */
+    pid_t                       pidSender;
+
     /** Signal info. */
     siginfo_t                   Info;
@@ -277 +284 @@
      * For signals which aren't queable only one signal can be queued.
      */
-    __LIBC_PSPMSIGNAL           pSigHead;
-    /** Number of queued signals.
-     * After it passes 48 signals, only SIGCHLD will be queued.
-     * This means siqueue() won't work 100% according to spec. */
-    unsigned                    cSigsQueued;
+    volatile __LIBC_PSPMSIGNAL  pSigHead;
+    /** Number of signals send.
+     * After __LIBC_SPM_SIGNALS_MAX_SENT signals only SIGCHLD will be allowed sent.
+     */
+    volatile unsigned           cSigsSent;
 
     /** Reserved pool pointer field with default value 0. */
@@ -653 +660 @@
 
 /**
- * De-queues one or more pending signals.
+ * Get the signal set of pending signals.
+ *
+ * @returns Number of pending signals on success.
+ * @returns 0 if no signals are pending.
+ * @returns Negative error code (errno.h) on failure.
+ * @param   pSigSet     Where to create the set of pending signals.
+ */
+int     __libc_spmSigPending(sigset_t *pSigSet);
+
+/**
+ * De-queues one or more pending signals of a specific type.
+ *
  * @returns Number of de-queued signals on success.
  * @returns Negative error code (errno.h) on failure.
+ * @param   iSignalNo   Signal type to dequeue.
  * @param   paSignals   Where to store the signals.
  * @param   cSignals    Size of the signal array.
  * @param   cbSignal    Size of one signal entry.
  */
-int     __libc_spmSigDequeue(siginfo_t *paSignals, unsigned cSignals, size_t cbSignal);
+int     __libc_spmSigDequeue(int iSignalNo, siginfo_t *paSignals, unsigned cSignals, size_t cbSignal);