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Allocated memory port on heap

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This commit is contained in:
Justin Ethier 2016-08-26 03:51:42 -04:00
parent 6bbda1e943
commit 9fe2e1b90b
4 changed files with 30 additions and 7 deletions
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2
include/cyclone/runtime.h
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@ -216,7 +216,7 @@ port_type Cyc_stdin(void);
port_type Cyc_stderr(void);
port_type Cyc_io_open_input_file(void *data, object str);
port_type Cyc_io_open_output_file(void *data, object str);
port_type Cyc_io_open_output_string(void *data);
port_type *Cyc_io_open_output_string(void *data);
void Cyc_io_get_output_string(void *data, object cont, object port);
object Cyc_io_close_port(void *data, object port);
object Cyc_io_close_input_port(void *data, object port);

18
mstreams.c
View file

@ -33,14 +33,24 @@ if (type_is_pair_prim(clo)) { \
} \
}
port_type Cyc_io_open_output_string(void *data)
object Cyc_heap_alloc_port(void *data);
port_type *Cyc_io_open_output_string(void *data)
{
make_port(p, NULL, 0);
// Allocate port on the heap so the location of mem_buf does not change
// make_port(p, NULL, 0);
port_type *p = (port_type *)Cyc_heap_alloc_port(data);
p->hdr.mark = ((gc_thread_data *)data)->gc_alloc_color;
p->hdr.grayed = 0;
p->tag = port_tag;
p->fp = NULL;
p->mode = 0; // Output
p->mem_buf = NULL;
p->mem_buf_len = 0;
errno = 0;
#if CYC_HAVE_OPEN_MEMSTREAM
p.fp = open_memstream(&(p.mem_buf), &(p.mem_buf_len));
p->fp = open_memstream(&(p->mem_buf), &(p->mem_buf_len));
#endif
if (p.fp == NULL){
if (p->fp == NULL){
Cyc_rt_raise2(data, "Unable to open memory stream", obj_int2obj(errno));
}
return p;

13
runtime.c
View file

@ -926,6 +926,19 @@ object Cyc_write_char(void *data, object c, object port)
return quote_void;
}
// Internal function, do not use this anywhere outside the runtime
object Cyc_heap_alloc_port(void *data)
{
object p = NULL;
int heap_grown;
p = gc_alloc(Cyc_heap,
sizeof(port_type),
boolean_f, // OK to populate manually over here
(gc_thread_data *)data,
&heap_grown);
return p;
}
// TODO: should not be a predicate, may end up moving these to Scheme code
object memberp(void *data, object x, list l)
{

4
scheme/base.sld
View file

@ -1163,8 +1163,8 @@
((p->mode == 0 && p->fp != NULL) ? boolean_t : boolean_f)); ")
(define-c open-output-string
"(void *data, int argc, closure _, object k)"
" port_type p = Cyc_io_open_output_string(data);
return_closcall1(data, k, &p); ")
" port_type *p = Cyc_io_open_output_string(data);
return_closcall1(data, k, p); ")
(define-c get-output-string
"(void *data, int argc, closure _, object k, object port)"
" Cyc_io_get_output_string(data, k, port);