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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
use wasmer_vm::{
ImportInitializerFuncPtr, VMExport, VMExportFunction, VMExportGlobal, VMExportMemory,
VMExportTable,
};
use std::sync::Arc;
#[derive(Debug, Clone)]
pub enum Export {
Function(ExportFunction),
Table(ExportTable),
Memory(ExportMemory),
Global(ExportGlobal),
}
impl From<Export> for VMExport {
fn from(other: Export) -> Self {
match other {
Export::Function(ExportFunction { vm_function, .. }) => VMExport::Function(vm_function),
Export::Memory(ExportMemory { vm_memory }) => VMExport::Memory(vm_memory),
Export::Table(ExportTable { vm_table }) => VMExport::Table(vm_table),
Export::Global(ExportGlobal { vm_global }) => VMExport::Global(vm_global),
}
}
}
impl From<VMExport> for Export {
fn from(other: VMExport) -> Self {
match other {
VMExport::Function(vm_function) => Export::Function(ExportFunction {
vm_function,
metadata: None,
}),
VMExport::Memory(vm_memory) => Export::Memory(ExportMemory { vm_memory }),
VMExport::Table(vm_table) => Export::Table(ExportTable { vm_table }),
VMExport::Global(vm_global) => Export::Global(ExportGlobal { vm_global }),
}
}
}
#[derive(Debug, PartialEq)]
pub struct ExportFunctionMetadata {
pub(crate) host_env: *mut std::ffi::c_void,
pub(crate) import_init_function_ptr: Option<ImportInitializerFuncPtr>,
pub(crate) host_env_clone_fn: fn(*mut std::ffi::c_void) -> *mut std::ffi::c_void,
pub(crate) host_env_drop_fn: unsafe fn(*mut std::ffi::c_void),
}
unsafe impl Send for ExportFunctionMetadata {}
unsafe impl Sync for ExportFunctionMetadata {}
impl ExportFunctionMetadata {
pub unsafe fn new(
host_env: *mut std::ffi::c_void,
import_init_function_ptr: Option<ImportInitializerFuncPtr>,
host_env_clone_fn: fn(*mut std::ffi::c_void) -> *mut std::ffi::c_void,
host_env_drop_fn: fn(*mut std::ffi::c_void),
) -> Self {
Self {
host_env,
import_init_function_ptr,
host_env_clone_fn,
host_env_drop_fn,
}
}
}
impl Drop for ExportFunctionMetadata {
fn drop(&mut self) {
if !self.host_env.is_null() {
unsafe {
(self.host_env_drop_fn)(self.host_env);
}
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct ExportFunction {
pub vm_function: VMExportFunction,
pub metadata: Option<Arc<ExportFunctionMetadata>>,
}
impl From<ExportFunction> for Export {
fn from(func: ExportFunction) -> Self {
Self::Function(func)
}
}
#[derive(Debug, Clone)]
pub struct ExportTable {
pub vm_table: VMExportTable,
}
impl From<ExportTable> for Export {
fn from(table: ExportTable) -> Self {
Self::Table(table)
}
}
#[derive(Debug, Clone)]
pub struct ExportMemory {
pub vm_memory: VMExportMemory,
}
impl From<ExportMemory> for Export {
fn from(memory: ExportMemory) -> Self {
Self::Memory(memory)
}
}
#[derive(Debug, Clone)]
pub struct ExportGlobal {
pub vm_global: VMExportGlobal,
}
impl From<ExportGlobal> for Export {
fn from(global: ExportGlobal) -> Self {
Self::Global(global)
}
}