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Code Issues 1 Releases Wiki Activity

Add marshal utilities for pointers.

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This commit is contained in:
Calvin Rose 2023-06-24 10:50:13 -05:00
parent c2d77d6720
commit 141c1de946
3 changed files with 22 additions and 2 deletions
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4
src/core/ev.c
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@ -401,7 +401,7 @@ static void janet_stream_marshal(void *p, JanetMarshalContext *ctx) {
}
janet_marshal_abstract(ctx, p);
janet_marshal_int(ctx, (int32_t) s->flags);
janet_marshal_int64(ctx, (intptr_t) s->methods);
janet_marshal_ptr(ctx, s->methods);
#ifdef JANET_WINDOWS
/* TODO - ref counting to avoid situation where a handle is closed or GCed
* while in transit, and it's value gets reused. DuplicateHandle does not work
@ -438,7 +438,7 @@ static void *janet_stream_unmarshal(JanetMarshalContext *ctx) {
p->_mask = 0;
p->state = NULL;
p->flags = (uint32_t) janet_unmarshal_int(ctx);
p->methods = (void *) janet_unmarshal_int64(ctx);
p->methods = janet_unmarshal_ptr(ctx);
#ifdef JANET_WINDOWS
p->handle = (JanetHandle) janet_unmarshal_int64(ctx);
#else

18
src/core/marsh.c
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@ -362,6 +362,15 @@ void janet_marshal_int(JanetMarshalContext *ctx, int32_t value) {
pushint(st, value);
}
/* Only use in unsafe - don't marshal pointers otherwise */
void janet_marshal_ptr(JanetMarshalContext *ctx, const void *ptr) {
if (sizeof(ptr) == sizeof(int64_t)) {
janet_marshal_int64(ctx, (intptr_t) ptr);
} else {
janet_marshal_int(ctx, (intptr_t) ptr);
}
}
void janet_marshal_byte(JanetMarshalContext *ctx, uint8_t value) {
MarshalState *st = (MarshalState *)(ctx->m_state);
pushbyte(st, value);
@ -1165,6 +1174,15 @@ int64_t janet_unmarshal_int64(JanetMarshalContext *ctx) {
return read64(st, &(ctx->data));
}
void *janet_unmarshal_ptr(JanetMarshalContext *ctx) {
UnmarshalState *st = (UnmarshalState *)(ctx->u_state);
if (sizeof(int64_t) == sizeof(void *)) {
return (void *) ((intptr_t) read64(st, &(ctx->data)));
} else {
return (void *) ((intptr_t) readint(st, &(ctx->data)));
}
}
uint8_t janet_unmarshal_byte(JanetMarshalContext *ctx) {
UnmarshalState *st = (UnmarshalState *)(ctx->u_state);
MARSH_EOS(st, ctx->data);

2
src/include/janet.h
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@ -2053,6 +2053,7 @@ JANET_API int janet_cryptorand(uint8_t *out, size_t n);
JANET_API void janet_marshal_size(JanetMarshalContext *ctx, size_t value);
JANET_API void janet_marshal_int(JanetMarshalContext *ctx, int32_t value);
JANET_API void janet_marshal_int64(JanetMarshalContext *ctx, int64_t value);
JANET_API void janet_marshal_ptr(JanetMarshalContext *ctx, const void *value);
JANET_API void janet_marshal_byte(JanetMarshalContext *ctx, uint8_t value);
JANET_API void janet_marshal_bytes(JanetMarshalContext *ctx, const uint8_t *bytes, size_t len);
JANET_API void janet_marshal_janet(JanetMarshalContext *ctx, Janet x);
@ -2062,6 +2063,7 @@ JANET_API void janet_unmarshal_ensure(JanetMarshalContext *ctx, size_t size);
JANET_API size_t janet_unmarshal_size(JanetMarshalContext *ctx);
JANET_API int32_t janet_unmarshal_int(JanetMarshalContext *ctx);
JANET_API int64_t janet_unmarshal_int64(JanetMarshalContext *ctx);
JANET_API void *janet_unmarshal_ptr(JanetMarshalContext *ctx);
JANET_API uint8_t janet_unmarshal_byte(JanetMarshalContext *ctx);
JANET_API void janet_unmarshal_bytes(JanetMarshalContext *ctx, uint8_t *dest, size_t len);
JANET_API Janet janet_unmarshal_janet(JanetMarshalContext *ctx);