1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
use crate::{
resolve_imports, InstantiationError, Resolver, RuntimeError, SerializeError, Tunables,
};
use std::any::Any;
use std::fs;
use std::path::Path;
use std::sync::Arc;
use wasmer_compiler::Features;
use wasmer_types::entity::{BoxedSlice, PrimaryMap};
use wasmer_types::{
DataInitializer, FunctionIndex, LocalFunctionIndex, MemoryIndex, OwnedDataInitializer,
SignatureIndex, TableIndex,
};
use wasmer_vm::{
FunctionBodyPtr, InstanceHandle, MemoryStyle, ModuleInfo, TableStyle, VMSharedSignatureIndex,
};
pub trait Artifact: Send + Sync {
fn module(&self) -> Arc<ModuleInfo>;
fn module_ref(&self) -> &ModuleInfo;
fn module_mut(&mut self) -> Option<&mut ModuleInfo>;
fn register_frame_info(&self);
fn features(&self) -> &Features;
fn memory_styles(&self) -> &PrimaryMap<MemoryIndex, MemoryStyle>;
fn table_styles(&self) -> &PrimaryMap<TableIndex, TableStyle>;
fn data_initializers(&self) -> &[OwnedDataInitializer];
fn finished_functions(&self) -> &BoxedSlice<LocalFunctionIndex, FunctionBodyPtr>;
fn finished_dynamic_function_trampolines(&self) -> &BoxedSlice<FunctionIndex, FunctionBodyPtr>;
fn signatures(&self) -> &BoxedSlice<SignatureIndex, VMSharedSignatureIndex>;
fn serialize(&self) -> Result<Vec<u8>, SerializeError>;
fn serialize_to_file(&self, path: &Path) -> Result<(), SerializeError> {
let serialized = self.serialize()?;
fs::write(&path, serialized)?;
Ok(())
}
fn preinstantiate(&self) -> Result<(), InstantiationError> {
Ok(())
}
unsafe fn instantiate(
&self,
tunables: &dyn Tunables,
resolver: &dyn Resolver,
host_state: Box<dyn Any>,
) -> Result<InstanceHandle, InstantiationError> {
self.preinstantiate()?;
let module = self.module();
let imports = resolve_imports(
&module,
resolver,
&self.finished_dynamic_function_trampolines(),
self.memory_styles(),
self.table_styles(),
)
.map_err(InstantiationError::Link)?;
let finished_memories = tunables
.create_memories(&module, self.memory_styles())
.map_err(InstantiationError::Link)?
.into_boxed_slice();
let finished_tables = tunables
.create_tables(&module, self.table_styles())
.map_err(InstantiationError::Link)?
.into_boxed_slice();
let finished_globals = tunables
.create_globals(&module)
.map_err(InstantiationError::Link)?
.into_boxed_slice();
self.register_frame_info();
InstanceHandle::new(
module,
self.finished_functions().clone(),
finished_memories,
finished_tables,
finished_globals,
imports,
self.signatures().clone(),
host_state,
)
.map_err(|trap| InstantiationError::Start(RuntimeError::from_trap(trap)))
}
unsafe fn finish_instantiation(
&self,
handle: &InstanceHandle,
) -> Result<(), InstantiationError> {
let is_bulk_memory: bool = self.features().bulk_memory;
let data_initializers = self
.data_initializers()
.iter()
.map(|init| DataInitializer {
location: init.location.clone(),
data: &*init.data,
})
.collect::<Vec<_>>();
handle
.finish_instantiation(is_bulk_memory, &data_initializers)
.map_err(|trap| InstantiationError::Start(RuntimeError::from_trap(trap)))
}
}