Mesa (asm-shader-rework-1): ARB prog: Clean up several memory leaks
Ian Romanick
idr at kemper.freedesktop.org
Mon Jul 27 19:23:56 UTC 2009
Module: Mesa
Branch: asm-shader-rework-1
Commit: 94b45567047fd681666f261f1ad0164049f0491a
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=94b45567047fd681666f261f1ad0164049f0491a
Author: Ian Romanick <ian.d.romanick at intel.com>
Date: Mon Jul 27 12:21:26 2009 -0700
ARB prog: Clean up several memory leaks
As far as I am able to determine via code inspection and using
Valgrind, that should be all of the leaks in the parser.
---
src/mesa/shader/program_parse.tab.c | 35 ++++++++++++++++++++++++++++++-----
src/mesa/shader/program_parse.y | 35 ++++++++++++++++++++++++++++++-----
src/mesa/shader/program_parser.h | 9 +++++++++
3 files changed, 69 insertions(+), 10 deletions(-)
diff --git a/src/mesa/shader/program_parse.tab.c b/src/mesa/shader/program_parse.tab.c
index 945d776..a49cfeb 100644
--- a/src/mesa/shader/program_parse.tab.c
+++ b/src/mesa/shader/program_parse.tab.c
@@ -4700,6 +4700,8 @@ declare_variable(struct asm_parser_state *state, char *name, enum asm_type t,
}
_mesa_symbol_table_add_symbol(state->st, 0, s->name, s);
+ s->next = state->sym;
+ state->sym = s;
}
return s;
@@ -4900,6 +4902,9 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
struct asm_instruction *inst;
unsigned i;
GLubyte *strz;
+ GLboolean result = GL_FALSE;
+ void *temp;
+ struct asm_symbol *sym;
state->ctx = ctx;
state->prog->Target = target;
@@ -4961,7 +4966,7 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
if (ctx->Program.ErrorPos != -1) {
- return GL_FALSE;
+ goto error;
}
if (! _mesa_layout_parameters(state)) {
@@ -4972,7 +4977,7 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
loc.position = len;
yyerror(& loc, state, "invalid PARAM usage");
- return GL_FALSE;
+ goto error;
}
@@ -4986,8 +4991,6 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
struct asm_instruction *const temp = inst->next;
state->prog->Instructions[i] = inst->Base;
- _mesa_free(inst);
-
inst = temp;
}
@@ -5011,6 +5014,28 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
state->prog->NumNativeAttributes = state->prog->NumAttributes;
state->prog->NumNativeAddressRegs = state->prog->NumAddressRegs;
- return GL_TRUE;
+ result = GL_TRUE;
+
+error:
+ for (inst = state->inst_head; inst != NULL; inst = temp) {
+ temp = inst->next;
+ _mesa_free(inst);
+ }
+
+ state->inst_head = NULL;
+ state->inst_tail = NULL;
+
+ for (sym = state->sym; sym != NULL; sym = temp) {
+ temp = sym->next;
+
+ _mesa_free(sym->name);
+ _mesa_free(sym);
+ }
+ state->sym = NULL;
+
+ _mesa_symbol_table_dtor(state->st);
+ state->st = NULL;
+
+ return result;
}
diff --git a/src/mesa/shader/program_parse.y b/src/mesa/shader/program_parse.y
index 8521a97..92e0359 100644
--- a/src/mesa/shader/program_parse.y
+++ b/src/mesa/shader/program_parse.y
@@ -1904,6 +1904,8 @@ declare_variable(struct asm_parser_state *state, char *name, enum asm_type t,
}
_mesa_symbol_table_add_symbol(state->st, 0, s->name, s);
+ s->next = state->sym;
+ state->sym = s;
}
return s;
@@ -2104,6 +2106,9 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
struct asm_instruction *inst;
unsigned i;
GLubyte *strz;
+ GLboolean result = GL_FALSE;
+ void *temp;
+ struct asm_symbol *sym;
state->ctx = ctx;
state->prog->Target = target;
@@ -2165,7 +2170,7 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
if (ctx->Program.ErrorPos != -1) {
- return GL_FALSE;
+ goto error;
}
if (! _mesa_layout_parameters(state)) {
@@ -2176,7 +2181,7 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
loc.position = len;
yyerror(& loc, state, "invalid PARAM usage");
- return GL_FALSE;
+ goto error;
}
@@ -2190,8 +2195,6 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
struct asm_instruction *const temp = inst->next;
state->prog->Instructions[i] = inst->Base;
- _mesa_free(inst);
-
inst = temp;
}
@@ -2215,5 +2218,27 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
state->prog->NumNativeAttributes = state->prog->NumAttributes;
state->prog->NumNativeAddressRegs = state->prog->NumAddressRegs;
- return GL_TRUE;
+ result = GL_TRUE;
+
+error:
+ for (inst = state->inst_head; inst != NULL; inst = temp) {
+ temp = inst->next;
+ _mesa_free(inst);
+ }
+
+ state->inst_head = NULL;
+ state->inst_tail = NULL;
+
+ for (sym = state->sym; sym != NULL; sym = temp) {
+ temp = sym->next;
+
+ _mesa_free((void *) sym->name);
+ _mesa_free(sym);
+ }
+ state->sym = NULL;
+
+ _mesa_symbol_table_dtor(state->st);
+ state->st = NULL;
+
+ return result;
}
diff --git a/src/mesa/shader/program_parser.h b/src/mesa/shader/program_parser.h
index b4c24ec..e17ffd2 100644
--- a/src/mesa/shader/program_parser.h
+++ b/src/mesa/shader/program_parser.h
@@ -39,6 +39,7 @@ enum asm_type {
};
struct asm_symbol {
+ struct asm_symbol *next; /**< List linkage for freeing. */
const char *name;
enum asm_type type;
unsigned attrib_binding;
@@ -135,6 +136,14 @@ struct asm_parser_state {
struct _mesa_symbol_table *st;
/**
+ * Linked list of symbols
+ *
+ * This list is \b only used when cleaning up compiler state and freeing
+ * memory.
+ */
+ struct asm_symbol *sym;
+
+ /**
* State for the lexer.
*/
void *scanner;
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