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feat(runtime-c-api) Add an API to update vm::Ctx.data.

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This patch adds 2 functions for the runtime C API, respectively
`wasmer_instance_context_data_set` and
`wasmer_instance_context_data_get`. The goal is to modify the
`vm::Ctx.data` field in the `runtime-core` library.

This is required to pass dynamic data to imported functions for
instance.
This commit is contained in:
Ivan Enderlin
2019-03-11 16:50:18 +01:00
parent a61fdf8b0b
commit a11d454130
3 changed files with 42 additions and 4 deletions
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15
lib/runtime-c-api/wasmer.h
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@ -95,11 +95,11 @@ typedef struct {
typedef struct {
} wasmer_memory_t;
} wasmer_instance_context_t;
typedef struct {
} wasmer_instance_context_t;
} wasmer_memory_t;
typedef struct {
@ -382,6 +382,17 @@ wasmer_result_t wasmer_instance_call(wasmer_instance_t *instance,
wasmer_value_t *results,
int results_len);
/**
* Gets the `data` field within the context.
*/
void *wasmer_instance_context_data_get(const wasmer_instance_context_t *ctx);
/**
* Sets the `data` field of the instance context. This context will be
* passed to all imported function for instance.
*/
void wasmer_instance_context_data_set(wasmer_instance_t *instance, void *data_ptr);
/**
* Gets the memory within the context at the index `memory_idx`.
* The index is always 0 until multiple memories are supported.