From 7ed52495d0a5eb4884b8ba5b5eab489433b0a55e Mon Sep 17 00:00:00 2001
From: jsorg71 <jsorg71>
Date: Sun, 4 Feb 2007 07:53:15 +0000
Subject: [PATCH] thread_calls

---
 xrdp/xrdp.c         | 48 ++++++++++++++++++++++-----------------------
 xrdp/xrdp.h         |  2 --
 xrdp/xrdp_listen.c  | 19 ++++++++++++++----
 xrdp/xrdp_process.c |  2 +-
 4 files changed, 40 insertions(+), 31 deletions(-)

diff --git a/xrdp/xrdp.c b/xrdp/xrdp.c
index 7e95bada..f3ecb38c 100644
--- a/xrdp/xrdp.c
+++ b/xrdp/xrdp.c
@@ -51,23 +51,23 @@ g_xrdp_sync(long (*sync_func)(long param1, long param2), long sync_param1,
   long sync_result;
   int sync_command;
 
-  tc_lock_mutex(g_sync1_mutex);
-  tc_lock_mutex(g_sync_mutex);
+  tc_mutex_lock(g_sync1_mutex);
+  tc_mutex_lock(g_sync_mutex);
   g_sync_param1 = sync_param1;
   g_sync_param2 = sync_param2;
   g_sync_func = sync_func;
   g_sync_command = 100;
-  tc_unlock_mutex(g_sync_mutex);
+  tc_mutex_unlock(g_sync_mutex);
   do
   {
     g_sleep(100);
-    tc_lock_mutex(g_sync_mutex);
+    tc_mutex_lock(g_sync_mutex);
     sync_command = g_sync_command;
     sync_result = g_sync_result;
-    tc_unlock_mutex(g_sync_mutex);
+    tc_mutex_unlock(g_sync_mutex);
   }
   while (sync_command != 0);
-  tc_unlock_mutex(g_sync1_mutex);
+  tc_mutex_unlock(g_sync1_mutex);
   return sync_result;
 }
 
@@ -101,9 +101,9 @@ g_is_term(void)
 {
   int rv;
 
-  tc_lock_mutex(g_term_mutex);
+  tc_mutex_lock(g_term_mutex);
   rv = g_term;
-  tc_unlock_mutex(g_term_mutex);
+  tc_mutex_unlock(g_term_mutex);
   return rv;
 }
 
@@ -111,9 +111,9 @@ g_is_term(void)
 void APP_CC
 g_set_term(int in_val)
 {
-  tc_lock_mutex(g_term_mutex);
+  tc_mutex_lock(g_term_mutex);
   g_term = in_val;
-  tc_unlock_mutex(g_term_mutex);
+  tc_mutex_unlock(g_term_mutex);
 }
 
 /*****************************************************************************/
@@ -128,7 +128,7 @@ pipe_sig(int sig_num)
 void APP_CC
 g_loop(void)
 {
-  tc_lock_mutex(g_sync_mutex);
+  tc_mutex_lock(g_sync_mutex);
   if (g_sync_command != 0)
   {
     if (g_sync_func != 0)
@@ -140,7 +140,7 @@ g_loop(void)
     }
     g_sync_command = 0;
   }
-  tc_unlock_mutex(g_sync_mutex);
+  tc_mutex_unlock(g_sync_mutex);
 }
 
 /* win32 service control functions */
@@ -202,9 +202,9 @@ MyServiceMain(DWORD dwArgc, LPTSTR* lpszArgv)
   g_set_current_dir("c:\\temp\\xrdp");
   g_listen = 0;
   WSAStartup(2, &w);
-  g_term_mutex = tc_create_mutex();
-  g_sync_mutex = tc_create_mutex();
-  g_sync1_mutex = tc_create_mutex();
+  g_term_mutex = tc_mutex_create();
+  g_sync_mutex = tc_mutex_create();
+  g_sync1_mutex = tc_mutex_create();
   g_memset(&g_service_status, 0, sizeof(SERVICE_STATUS));
   g_service_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
   g_service_status.dwCurrentState = SERVICE_RUNNING;
@@ -235,9 +235,9 @@ MyServiceMain(DWORD dwArgc, LPTSTR* lpszArgv)
     //g_file_write(fd, text, g_strlen(text));
   }
   WSACleanup();
-  tc_delete_mutex(g_term_mutex);
-  tc_delete_mutex(g_sync_mutex);
-  tc_delete_mutex(g_sync1_mutex);
+  tc_mutex_delete(g_term_mutex);
+  tc_mutex_delete(g_sync_mutex);
+  tc_mutex_delete(g_sync1_mutex);
   xrdp_listen_delete(g_listen);
   //CloseHandle(event_han);
 }
@@ -516,13 +516,13 @@ main(int argc, char** argv)
   g_signal(9, xrdp_shutdown); /* SIGKILL */
   g_signal(13, pipe_sig); /* sig pipe */
   g_signal(15, xrdp_shutdown); /* SIGTERM */
-  g_term_mutex = tc_create_mutex();
-  g_sync_mutex = tc_create_mutex();
-  g_sync1_mutex = tc_create_mutex();
+  g_term_mutex = tc_mutex_create();
+  g_sync_mutex = tc_mutex_create();
+  g_sync1_mutex = tc_mutex_create();
   xrdp_listen_main_loop(g_listen);
-  tc_delete_mutex(g_term_mutex);
-  tc_delete_mutex(g_sync_mutex);
-  tc_delete_mutex(g_sync1_mutex);
+  tc_mutex_delete(g_term_mutex);
+  tc_mutex_delete(g_sync_mutex);
+  tc_mutex_delete(g_sync1_mutex);
 #if defined(_WIN32)
   /* I don't think it ever gets here */
   WSACleanup();
diff --git a/xrdp/xrdp.h b/xrdp/xrdp.h
index 7e597503..de782657 100644
--- a/xrdp/xrdp.h
+++ b/xrdp/xrdp.h
@@ -117,8 +117,6 @@ xrdp_process_create(struct xrdp_listen* owner);
 void APP_CC
 xrdp_process_delete(struct xrdp_process* self);
 int APP_CC
-xrdp_process_loop(struct xrdp_process* self);
-int APP_CC
 xrdp_process_main_loop(struct xrdp_process* self);
 
 /* xrdp_listen.c */
diff --git a/xrdp/xrdp_listen.c b/xrdp/xrdp_listen.c
index d8b3b54f..3399e427 100644
--- a/xrdp/xrdp_listen.c
+++ b/xrdp/xrdp_listen.c
@@ -22,6 +22,9 @@
 
 #include "xrdp.h"
 
+/* 'g_process' is protected by the semaphore 'g_process_sem'.  One thread sets
+   g_process and waits for the other to process it */
+static long g_process_sem = 0;
 static struct xrdp_process* g_process = 0;
 
 /*****************************************************************************/
@@ -130,8 +133,13 @@ xrdp_listen_delete_pro(struct xrdp_listen* self, struct xrdp_process* pro)
 THREAD_RV THREAD_CC
 xrdp_process_run(void* in_val)
 {
+  struct xrdp_process* process;
+
   DEBUG(("process started"));
-  xrdp_process_main_loop(g_process);
+  process = g_process;
+  g_process = 0;
+  tc_sem_inc(g_process_sem);
+  xrdp_process_main_loop(process);
   DEBUG(("process done"));
   return 0;
 }
@@ -149,6 +157,8 @@ xrdp_listen_main_loop(struct xrdp_listen* self)
   struct list* names;
   struct list* values;
 
+  self->status = 1;
+  g_process_sem = tc_sem_create(0);
   /* default to port 3389 */
   g_strncpy(port, "3389", 7);
   /* see if port is in xrdp.ini file */
@@ -183,7 +193,6 @@ xrdp_listen_main_loop(struct xrdp_listen* self)
     list_delete(values);
     g_file_close(fd);
   }
-  self->status = 1;
   self->sck = g_tcp_socket();
   g_tcp_set_non_blocking(self->sck);
   error = g_tcp_bind(self->sck, port);
@@ -200,7 +209,7 @@ xrdp_listen_main_loop(struct xrdp_listen* self)
     while (!g_is_term() && !self->term)
     {
       error = g_tcp_accept(self->sck);
-      if (error == -1 && g_tcp_last_error_would_block(self->sck))
+      if ((error == -1) && g_tcp_last_error_would_block(self->sck))
       {
         g_sleep(100);
         g_loop();
@@ -217,7 +226,8 @@ xrdp_listen_main_loop(struct xrdp_listen* self)
           /* start thread */
           g_process->sck = error;
           tc_thread_create(xrdp_process_run, 0);
-          g_sleep(100);
+          tc_sem_dec(g_process_sem); /* this will wait */
+          g_sleep(250); /* just for safety */
         }
         else
         {
@@ -232,6 +242,7 @@ xrdp_listen_main_loop(struct xrdp_listen* self)
   }
   xrdp_listen_term_processes(self);
   g_tcp_close(self->sck);
+  tc_sem_delete(g_process_sem);
   self->status = -1;
   return 0;
 }
diff --git a/xrdp/xrdp_process.c b/xrdp/xrdp_process.c
index dd217faf..2ff99377 100644
--- a/xrdp/xrdp_process.c
+++ b/xrdp/xrdp_process.c
@@ -47,7 +47,7 @@ xrdp_process_delete(struct xrdp_process* self)
 }
 
 /*****************************************************************************/
-int APP_CC
+static int APP_CC
 xrdp_process_loop(struct xrdp_process* self)
 {
   int rv;