gdbserver: remove pid_of(thread)

This function doesn't seem so useful, use `thread_info::id::pid`
directly instead.

Change-Id: I7450c4223e5b0bf66788eeb5b070ab6f5287f798
Reviewed-By: Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>

gdbserver/gdbthread.h

diff --git a/gdbserver/gdbthread.h b/gdbserver/gdbthread.h
index ff43977..11ab7f4 100644
--- a/gdbserver/gdbthread.h
+++ b/gdbserver/gdbthread.h
@@ -136,14 +136,6 @@ thread_info *find_thread_in_random
 thread_info *find_thread_in_random
   (ptid_t ptid, gdb::function_view<bool (thread_info *)> func);
 
-/* Get the pid of THREAD.  */
-
-static inline int
-pid_of (const thread_info *thread)
-{
-  return thread->id.pid ();
-}
-
 /* Switch the current thread.  */
 
 void switch_to_thread (thread_info *thread);

gdbserver/linux-aarch64-low.cc

diff --git a/gdbserver/linux-aarch64-low.cc b/gdbserver/linux-aarch64-low.cc
index 2ad818b..7dabd57 100644
--- a/gdbserver/linux-aarch64-low.cc
+++ b/gdbserver/linux-aarch64-low.cc
@@ -436,7 +436,7 @@
   int ret;
   enum target_hw_bp_type targ_type;
   struct aarch64_debug_reg_state *state
-    = aarch64_get_debug_reg_state (pid_of (current_thread));
+    = aarch64_get_debug_reg_state (current_thread->id.pid ());
 
   if (show_debug_regs)
     fprintf (stderr, "insert_point on entry (addr=0x%08lx, len=%d)\n",
@@ -487,7 +487,7 @@
   int ret;
   enum target_hw_bp_type targ_type;
   struct aarch64_debug_reg_state *state
-    = aarch64_get_debug_reg_state (pid_of (current_thread));
+    = aarch64_get_debug_reg_state (current_thread->id.pid ());
 
   if (show_debug_regs)
     fprintf (stderr, "remove_point on entry (addr=0x%08lx, len=%d)\n",
@@ -573,7 +573,7 @@
     = aarch64_remove_non_address_bits ((CORE_ADDR) siginfo.si_addr);
 
   /* Check if the address matches any watched address.  */
-  state = aarch64_get_debug_reg_state (pid_of (current_thread));
+  state = aarch64_get_debug_reg_state (current_thread->id.pid ());
   CORE_ADDR result;
   if (aarch64_stopped_data_address (state, addr_trap, &result))
     return result;

gdbserver/linux-arm-low.cc

diff --git a/gdbserver/linux-arm-low.cc b/gdbserver/linux-arm-low.cc
index 4f938a2..4626662 100644
--- a/gdbserver/linux-arm-low.cc
+++ b/gdbserver/linux-arm-low.cc
@@ -854,7 +854,7 @@
 {
   struct thread_info *thread = get_lwp_thread (lwp);
   int pid = thread->id.lwp ();
-  struct process_info *proc = find_process_pid (pid_of (thread));
+  process_info *proc = find_process_pid (thread->id.pid ());
   struct arch_process_info *proc_info = proc->priv->arch_private;
   struct arch_lwp_info *lwp_info = lwp->arch_private;
   int i;

gdbserver/linux-low.cc

diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index e23127e..fa8aaf8 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -2346,10 +2346,9 @@
 
   if (WIFSTOPPED (wstat))
     {
-      struct process_info *proc;
-
       /* Architecture-specific setup after inferior is running.  */
-      proc = find_process_pid (pid_of (thread));
+      process_info *proc = find_process_pid (thread->id.pid ());
+
       if (proc->tdesc == NULL)
 	{
 	  if (proc->attached)
@@ -2373,7 +2372,7 @@
 
   if (WIFSTOPPED (wstat) && child->must_set_ptrace_flags)
     {
-      struct process_info *proc = find_process_pid (pid_of (thread));
+      process_info *proc = find_process_pid (thread->id.pid ());
       int options = linux_low_ptrace_options (proc->attached);
 
       linux_enable_event_reporting (lwpid, options);
@@ -4279,7 +4278,7 @@
 	  || ptid == thread->id
 	  /* Handle both 'pPID' and 'pPID.-1' as meaning 'all threads
 	     of PID'.  */
-	  || (ptid.pid () == pid_of (thread)
+	  || (ptid.pid () == thread->id.pid ()
 	      && (ptid.is_pid ()
 		  || ptid.lwp () == -1)))
 	{
@@ -5975,7 +5974,7 @@
       else
 	{
 	  /* Already stopped; go ahead and set the ptrace options.  */
-	  struct process_info *proc = find_process_pid (pid_of (thread));
+	  process_info *proc = find_process_pid (thread->id.pid ());
 	  int options = linux_low_ptrace_options (proc->attached);
 
 	  linux_enable_event_reporting (thread->id.lwp (), options);

gdbserver/linux-s390-low.cc

diff --git a/gdbserver/linux-s390-low.cc b/gdbserver/linux-s390-low.cc
index ee2c192..a91c77f 100644
--- a/gdbserver/linux-s390-low.cc
+++ b/gdbserver/linux-s390-low.cc
@@ -589,7 +589,7 @@
   struct regset_info *regset;
 
   /* Determine word size and HWCAP.  */
-  int pid = pid_of (current_thread);
+  int pid = current_thread->id.pid ();
   int wordsize = s390_get_wordsize (pid);
   unsigned long hwcap = linux_get_hwcap (pid, wordsize);
 

gdbserver/server.cc

diff --git a/gdbserver/server.cc b/gdbserver/server.cc
index 7731cfa..b7ea4cc 100644
--- a/gdbserver/server.cc
+++ b/gdbserver/server.cc
@@ -1823,7 +1823,7 @@
       if (current_thread == NULL)
 	return -1;
 
-      pid = pid_of (current_thread);
+      pid = current_thread->id.pid ();
     }
   else
     {