Module: Mesa Branch: master Commit: 5a23f6bd8d8d26e0e75801df44cc228f15f9768e URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=5a23f6bd8d8d26e0e75801df44cc228f15f9768e
Author: Emil Velikov <[email protected]> Date: Thu Nov 26 00:36:17 2015 +0000 mesa: rework the meaning of gl_debug_message::length Currently it stores strlen(buf) whenever the user originally provided a negative value for length. Although I've not seen any explicit text in the spec, CTS requires that the very same length (be that negative value or not) is returned back on Pop. So let's push down the length < 0 checks, tweak the meaning of gl_debug_message::length and fix GetDebugMessageLog to add and count the null terminators, as required by the spec. v2: return correct total length in GetDebugMessageLog v3: rebase (drop _mesa_shader_debug hunk). Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Timothy Arceri <[email protected]> --- src/mesa/main/errors.c | 40 ++++++++++++++++++++++++---------------- 1 file changed, 24 insertions(+), 16 deletions(-) diff --git a/src/mesa/main/errors.c b/src/mesa/main/errors.c index a6294e3..9e66109 100644 --- a/src/mesa/main/errors.c +++ b/src/mesa/main/errors.c @@ -76,6 +76,8 @@ struct gl_debug_message enum mesa_debug_type type; GLuint id; enum mesa_debug_severity severity; + /* length as given by the user - if message was explicitly null terminated, + * length can be negative */ GLsizei length; GLcharARB *message; }; @@ -211,14 +213,19 @@ debug_message_store(struct gl_debug_message *msg, enum mesa_debug_severity severity, GLsizei len, const char *buf) { + GLsizei length = len; + assert(!msg->message && !msg->length); - msg->message = malloc(len+1); + if (length < 0) + length = strlen(buf); + + msg->message = malloc(length+1); if (msg->message) { - (void) strncpy(msg->message, buf, (size_t)len); - msg->message[len] = '\0'; + (void) strncpy(msg->message, buf, (size_t)length); + msg->message[length] = '\0'; - msg->length = len+1; + msg->length = len; msg->source = source; msg->type = type; msg->id = id; @@ -229,7 +236,7 @@ debug_message_store(struct gl_debug_message *msg, /* malloc failed! */ msg->message = out_of_memory; - msg->length = strlen(out_of_memory)+1; + msg->length = -1; msg->source = MESA_DEBUG_SOURCE_OTHER; msg->type = MESA_DEBUG_TYPE_ERROR; msg->id = oom_msg_id; @@ -607,7 +614,7 @@ debug_log_message(struct gl_debug_state *debug, GLint nextEmpty; struct gl_debug_message *emptySlot; - assert(len >= 0 && len < MAX_DEBUG_MESSAGE_LENGTH); + assert(len < MAX_DEBUG_MESSAGE_LENGTH); if (log->NumMessages == MAX_DEBUG_LOGGED_MESSAGES) return; @@ -1004,8 +1011,6 @@ _mesa_DebugMessageInsert(GLenum source, GLenum type, GLuint id, if (!validate_params(ctx, INSERT, callerstr, source, type, severity)) return; /* GL_INVALID_ENUM */ - if (length < 0) - length = strlen(buf); if (!validate_length(ctx, callerstr, length, buf)) return; /* GL_INVALID_VALUE */ @@ -1047,23 +1052,28 @@ _mesa_GetDebugMessageLog(GLuint count, GLsizei logSize, GLenum *sources, for (ret = 0; ret < count; ret++) { const struct gl_debug_message *msg = debug_fetch_message(debug); + GLsizei len; if (!msg) break; - if (logSize < msg->length && messageLog != NULL) + len = msg->length; + if (len < 0) + len = strlen(msg->message); + + if (logSize < len+1 && messageLog != NULL) break; if (messageLog) { - assert(msg->message[msg->length-1] == '\0'); - (void) strncpy(messageLog, msg->message, (size_t)msg->length); + assert(msg->message[len] == '\0'); + (void) strncpy(messageLog, msg->message, (size_t)len+1); - messageLog += msg->length; - logSize -= msg->length; + messageLog += len+1; + logSize -= len+1; } if (lengths) - *lengths++ = msg->length; + *lengths++ = len+1; if (severities) *severities++ = debug_severity_enums[msg->severity]; if (sources) @@ -1173,8 +1183,6 @@ _mesa_PushDebugGroup(GLenum source, GLuint id, GLsizei length, return; } - if (length < 0) - length = strlen(message); if (!validate_length(ctx, callerstr, length, message)) return; /* GL_INVALID_VALUE */ _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
