Rename fork() to duplicate()

Renames all the memory fork() functions to duplicate(),
since this is what they actually do.

They enable forking, but that is a seprate functionality.

lib/api/src/js/export.rs

@@ -54,7 +54,7 @@ impl VMMemory {
     }
 
     /// Copies this memory to a new memory
-    pub fn fork(&self) -> Result<VMMemory, wasmer_types::MemoryError> {
+    pub fn duplicate(&self) -> Result<VMMemory, wasmer_types::MemoryError> {
         let new_memory = crate::Memory::new_internal(self.ty.clone())?;
 
         #[cfg(feature = "tracing")]

lib/api/src/js/externals/memory.rs

@@ -265,9 +265,9 @@ impl Memory {
     }
 
     /// Copies this memory to a new memory
-    pub fn fork(&mut self, store: &impl AsStoreRef) -> Result<VMMemory, MemoryError> {
+    pub fn duplicate(&mut self, store: &impl AsStoreRef) -> Result<VMMemory, MemoryError> {
         let mem = self.handle.get(store.as_store_ref().objects());
-        mem.fork()
+        mem.duplicate()
     }
 }
 

lib/api/src/sys/tunables.rs

@@ -117,10 +117,12 @@ mod tests {
                 .unwrap()
             }
         }
+
         fn try_clone(&self) -> Option<Box<dyn LinearMemory + 'static>> {
             None
         }
-        fn fork(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
+
+        fn duplicate(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
             let mem = self.mem.clone();
             Ok(Box::new(Self {
                 memory_definition: Some(UnsafeCell::new(VMMemoryDefinition {

lib/vm/src/memory.rs

@@ -119,11 +119,11 @@ impl WasmMmap {
 
     /// Copies the memory
     /// (in this case it performs a copy-on-write to save memory)
-    pub fn fork(&mut self) -> Result<Self, MemoryError> {
+    pub fn duplicate(&mut self) -> Result<Self, MemoryError> {
         let mem_length = self.size.bytes().0;
         let mut alloc = self
             .alloc
-            .fork(Some(mem_length))
+            .duplicate(Some(mem_length))
             .map_err(MemoryError::Generic)?;
         let base_ptr = alloc.as_mut_ptr();
         Ok(Self {
@@ -289,9 +289,9 @@ impl VMOwnedMemory {
     }
 
     /// Copies this memory to a new memory
-    pub fn fork(&mut self) -> Result<Self, MemoryError> {
+    pub fn duplicate(&mut self) -> Result<Self, MemoryError> {
         Ok(Self {
-            mmap: self.mmap.fork()?,
+            mmap: self.mmap.duplicate()?,
             config: self.config.clone(),
         })
     }
@@ -333,8 +333,8 @@ impl LinearMemory for VMOwnedMemory {
     }
 
     /// Copies this memory to a new memory
-    fn fork(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
+    fn duplicate(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
-        let forked = Self::fork(self)?;
+        let forked = Self::duplicate(self)?;
         Ok(Box::new(forked))
     }
 }
@@ -376,10 +376,10 @@ impl VMSharedMemory {
     }
 
     /// Copies this memory to a new memory
-    pub fn fork(&mut self) -> Result<Self, MemoryError> {
+    pub fn duplicate(&mut self) -> Result<Self, MemoryError> {
         let mut guard = self.mmap.write().unwrap();
         Ok(Self {
-            mmap: Arc::new(RwLock::new(guard.fork()?)),
+            mmap: Arc::new(RwLock::new(guard.duplicate()?)),
             config: self.config.clone(),
         })
     }
@@ -427,8 +427,8 @@ impl LinearMemory for VMSharedMemory {
     }
 
     /// Copies this memory to a new memory
-    fn fork(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
+    fn duplicate(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
-        let forked = Self::fork(self)?;
+        let forked = Self::duplicate(self)?;
         Ok(Box::new(forked))
     }
 }
@@ -495,8 +495,8 @@ impl LinearMemory for VMMemory {
     }
 
     /// Copies this memory to a new memory
-    fn fork(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
+    fn duplicate(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
-        self.0.fork()
+        self.0.duplicate()
     }
 }
 
@@ -558,8 +558,8 @@ impl VMMemory {
     }
 
     /// Copies this memory to a new memory
-    pub fn fork(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
+    pub fn duplicate(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError> {
-        LinearMemory::fork(self)
+        LinearMemory::duplicate(self)
     }
 }
 
@@ -615,5 +615,5 @@ where
     }
 
     /// Copies this memory to a new memory
-    fn fork(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>;
+    fn duplicate(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>;
 }

lib/vm/src/mmap.rs

@@ -317,7 +317,7 @@ impl Mmap {
 
     /// Copies the memory to a new swap file (using copy-on-write if available)
     #[cfg(not(target_os = "windows"))]
-    pub fn fork(&mut self, hint_used: Option<usize>) -> Result<Self, String> {
+    pub fn duplicate(&mut self, hint_used: Option<usize>) -> Result<Self, String> {
         // Empty memory is an edge case
 
         use std::os::unix::prelude::FromRawFd;
@@ -395,7 +395,7 @@ impl Mmap {
 
     /// Copies the memory to a new swap file (using copy-on-write if available)
     #[cfg(target_os = "windows")]
-    pub fn fork(&mut self, hint_used: Option<usize>) -> Result<Self, String> {
+    pub fn duplicate(&mut self, hint_used: Option<usize>) -> Result<Self, String> {
         // Create a new memory which we will copy to
         let new_mmap = Self::with_at_least(self.len)?;