document threads support

[imager.git] / imdatatypes.h

diff --git a/imdatatypes.h b/imdatatypes.h
index b56b43f18c6aa46bd0decc4c6e578e0ba03eed21..af55f908d9907a5692c7a0c7bb98916c2957a559 100644 (file)
--- a/imdatatypes.h
+++ b/imdatatypes.h
@@ -553,6 +553,18 @@ typedef enum {
   ic_color
 } i_combine_t;
 
+/*
+=item i_mutex_t
+X<i_mutex>
+=category mutex
+=synopsis i_mutex_t mutex;
+
+Opaque type for Imager's mutex API.
+
+=cut
+ */
+typedef struct i_mutex_tag *i_mutex_t;
+
 /*
    describes an axis of a MM font.
    Modelled on FT2's FT_MM_Axis.
@@ -694,6 +706,13 @@ enum {
 
 #include "iolayert.h"
 
+/* error message information returned by im_errors() */
+
+typedef struct {
+  char *msg;
+  int code;
+} i_errmsg;
+
 typedef struct i_render_tag i_render;
 
 #ifdef IMAGER_FORMAT_ATTR