Merge branch 'threads'

This branch adds initial support for multithreaded targets, as well as
forking and exec syscalls.  All of the bugs from initial testing are
fixed so far.

* threads: (25 commits)
  Don't spin waiting to interrupt zombie process
  Allow termination and exec events to propagate immediately
  Implement support for PTRACE_EVENT_FORK and ui
  Handle PTRACE_EVENT_EXIT to capture a final state snapshot
  Detect out-of-band thread exec state changes to prevent deadlock
  Enable user creation of thread-specific breakpoints
  Add orig_rax to register display
  Tweak SCHEDULER_DELAY for use with installing breakpoints
  Ignore breakpoints during singlestep
  Fix bug with cleaning temporary breakpoints
  Independent thread control refactor
  Multithread version 3
  Add strict_strtoul
  Prevent lingering traps after detach
  Handle PTRACE_EVENT_EXEC
  Workaround SIGSTOP on child process startup
  setpgid is redundant with setsid and causes an error
  Display name of pending signal
  dbg_realcont for testing purposes
  Display installed status of breakpoints
  ...

1 files changed, 22 insertions, 0 deletions

diff --git a/helpers.c b/helpers.c
index f7cc9c2..9973093 100644
--- a/helpers.c
+++ b/helpers.c
@@ -11,6 +11,12 @@ void *xmalloc(size_t size) {
     return ptr;
 }
 
+unsigned long strict_strtoul(const char *nptr, int base) {
+    char *endptr;
+    unsigned long ret = strtoul(nptr, &endptr, base);
+    return (*endptr ? 0 : ret);
+}
+
 void cursinit(void) {
     setlocale(LC_ALL, "");
     initscr();
@@ -20,6 +26,14 @@ void cursinit(void) {
     curs_set(FALSE);
     timeout(25);
     refresh();
+
+    start_color();
+    use_default_colors();
+
+    init_pair(1, COLOR_GREEN, -1);
+    init_pair(2, COLOR_CYAN, -1);
+    init_pair(3, COLOR_RED, -1);
+    init_pair(4, COLOR_YELLOW, -1);
 }
 
 void cursupdate(void) {
@@ -57,3 +71,11 @@ int pprintw(PANEL *pan, const char *fmt, ...) {
 int pclear(PANEL *pan) {
     return wclear(panel_window(pan));
 }
+
+int pattron(PANEL *pan, int attrs) {
+    return wattron(panel_window(pan), attrs);
+}
+
+int pattroff(PANEL *pan, int attrs) {
+    return wattroff(panel_window(pan), attrs);
+}