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VM: move the paths out of gc memory so that they arent unnecessarily 

added to the image
db4
Björn Lindqvist 2015-07-12 06:37:54 +02:00
parent a4b14808a0
commit c69e1a6e93
1 changed files with 18 additions and 12 deletions
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30
vm/image.cpp
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@ -295,15 +295,19 @@ bool factor_vm::save_image(const vm_char* saving_filename,
}
void factor_vm::primitive_save_image() {
byte_array* path2 = tagged<byte_array>(ctx->pop()).untag_check(this);
byte_array* path1 = tagged<byte_array>(ctx->pop()).untag_check(this);
vm_char* path1_saved = safe_strdup(path1->data<vm_char>());
vm_char* path2_saved = safe_strdup(path2->data<vm_char>());
/* do a full GC to push everything into tenured space */
primitive_compact_gc();
data_root<byte_array> path2(ctx->pop(), this);
path2.untag_check(this);
data_root<byte_array> path1(ctx->pop(), this);
path1.untag_check(this);
save_image((vm_char*)(path1.untagged() + 1),
(vm_char*)(path2.untagged() + 1));
save_image(path1_saved, path2_saved);
free(path1_saved);
free(path2_saved);
}
/* Allocates memory */
@ -311,10 +315,13 @@ void factor_vm::primitive_save_image_and_exit() {
/* We unbox this before doing anything else. This is the only point
where we might throw an error, so we have to throw an error here since
later steps destroy the current image. */
data_root<byte_array> path2(ctx->pop(), this);
path2.untag_check(this);
data_root<byte_array> path1(ctx->pop(), this);
path1.untag_check(this);
byte_array* path2 = tagged<byte_array>(ctx->pop()).untag_check(this);
byte_array* path1 = tagged<byte_array>(ctx->pop()).untag_check(this);
/* Copy the paths to non-gc memory to avoid them hanging around in
the saved image. */
vm_char* path1_saved = safe_strdup(path1->data<vm_char>());
vm_char* path2_saved = safe_strdup(path2->data<vm_char>());
/* strip out special_objects data which is set on startup anyway */
for (cell i = 0; i < special_object_count; i++)
@ -329,8 +336,7 @@ void factor_vm::primitive_save_image_and_exit() {
gc(collect_compact_op, 0 /* requested size */);
/* Save the image */
if (save_image((vm_char*)(path1.untagged() + 1),
(vm_char*)(path2.untagged() + 1)))
if (save_image(path1_saved, path2_saved))
exit(0);
else
exit(1);