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py/stream: Adjust mp_stream_posix_XXX to take void*, not mp_obj_t. 

These POSIX wrappers are assumed to be passed a concrete stream object so
it is more efficient (eg on nan-boxing builds) to pass in the pointer
rather than mp_obj_t, because then the users of these functions only need
to store a void* (and mp_obj_t may be wider than a pointer).  And things
would be further improved if the stream protocol functions eventually took
a pointer as their first argument (instead of an mp_obj_t).

This patch is a step to getting ussl/axtls compiling on nan-boxing builds.

See issue #3085.
This commit is contained in:
Damien George 2018-08-14 17:36:08 +10:00
parent ab78fe0eb9
commit 9ab816d676
2 changed files with 17 additions and 16 deletions
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24
py/stream.c
View File

@ -507,10 +507,10 @@ MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_stream_ioctl_obj, 2, 3, stream_ioctl);
// status, this variable will contain error no.
int mp_stream_errno;
ssize_t mp_stream_posix_write(mp_obj_t stream, const void *buf, size_t len) {
mp_obj_base_t* o = (mp_obj_base_t*)MP_OBJ_TO_PTR(stream);
ssize_t mp_stream_posix_write(void *stream, const void *buf, size_t len) {
mp_obj_base_t* o = stream;
const mp_stream_p_t *stream_p = o->type->protocol;
mp_uint_t out_sz = stream_p->write(stream, buf, len, &mp_stream_errno);
mp_uint_t out_sz = stream_p->write(MP_OBJ_FROM_PTR(stream), buf, len, &mp_stream_errno);
if (out_sz == MP_STREAM_ERROR) {
return -1;
} else {
@ -518,10 +518,10 @@ ssize_t mp_stream_posix_write(mp_obj_t stream, const void *buf, size_t len) {
}
}
ssize_t mp_stream_posix_read(mp_obj_t stream, void *buf, size_t len) {
mp_obj_base_t* o = (mp_obj_base_t*)MP_OBJ_TO_PTR(stream);
ssize_t mp_stream_posix_read(void *stream, void *buf, size_t len) {
mp_obj_base_t* o = stream;
const mp_stream_p_t *stream_p = o->type->protocol;
mp_uint_t out_sz = stream_p->read(stream, buf, len, &mp_stream_errno);
mp_uint_t out_sz = stream_p->read(MP_OBJ_FROM_PTR(stream), buf, len, &mp_stream_errno);
if (out_sz == MP_STREAM_ERROR) {
return -1;
} else {
@ -529,23 +529,23 @@ ssize_t mp_stream_posix_read(mp_obj_t stream, void *buf, size_t len) {
}
}
off_t mp_stream_posix_lseek(mp_obj_t stream, off_t offset, int whence) {
const mp_obj_base_t* o = (mp_obj_base_t*)MP_OBJ_TO_PTR(stream);
off_t mp_stream_posix_lseek(void *stream, off_t offset, int whence) {
const mp_obj_base_t* o = stream;
const mp_stream_p_t *stream_p = o->type->protocol;
struct mp_stream_seek_t seek_s;
seek_s.offset = offset;
seek_s.whence = whence;
mp_uint_t res = stream_p->ioctl(stream, MP_STREAM_SEEK, (mp_uint_t)(uintptr_t)&seek_s, &mp_stream_errno);
mp_uint_t res = stream_p->ioctl(MP_OBJ_FROM_PTR(stream), MP_STREAM_SEEK, (mp_uint_t)(uintptr_t)&seek_s, &mp_stream_errno);
if (res == MP_STREAM_ERROR) {
return -1;
}
return seek_s.offset;
}
int mp_stream_posix_fsync(mp_obj_t stream) {
mp_obj_base_t* o = (mp_obj_base_t*)MP_OBJ_TO_PTR(stream);
int mp_stream_posix_fsync(void *stream) {
mp_obj_base_t* o = stream;
const mp_stream_p_t *stream_p = o->type->protocol;
mp_uint_t res = stream_p->ioctl(stream, MP_STREAM_FLUSH, 0, &mp_stream_errno);
mp_uint_t res = stream_p->ioctl(MP_OBJ_FROM_PTR(stream), MP_STREAM_FLUSH, 0, &mp_stream_errno);
if (res == MP_STREAM_ERROR) {
return -1;
}

9
py/stream.h
View File

@ -116,10 +116,11 @@ void mp_stream_write_adaptor(void *self, const char *buf, size_t len);
#if MICROPY_STREAMS_POSIX_API
// Functions with POSIX-compatible signatures
ssize_t mp_stream_posix_write(mp_obj_t stream, const void *buf, size_t len);
ssize_t mp_stream_posix_read(mp_obj_t stream, void *buf, size_t len);
off_t mp_stream_posix_lseek(mp_obj_t stream, off_t offset, int whence);
int mp_stream_posix_fsync(mp_obj_t stream);
// "stream" is assumed to be a pointer to a concrete object with the stream protocol
ssize_t mp_stream_posix_write(void *stream, const void *buf, size_t len);
ssize_t mp_stream_posix_read(void *stream, void *buf, size_t len);
off_t mp_stream_posix_lseek(void *stream, off_t offset, int whence);
int mp_stream_posix_fsync(void *stream);
#endif
#if MICROPY_STREAMS_NON_BLOCK