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Cgo transforms the specified input Go source files into several output Go and C source files. The compiler options are passed through uninterpreted when invoking the C compiler to compile the C parts of the package.
Garbage collection (GC) is a memory recovery feature built into programming languages such as C# and Java. A GC-enabled programming language includes one or more garbage collectors (GC engines) that automatically free up memory space that has been allocated to objects no longer needed by the program.
Garbage collection (GC) is a dynamic approach to automatic memory management and heap allocation that processes and identifies dead memory blocks and reallocates storage for reuse. The primary purpose of garbage collection is to reduce memory leaks.
There are two ways to do it : Using System. gc() method: System class contain static method gc() for requesting JVM to run Garbage Collector. Using Runtime.
Is it possible to make the garbage collector in Go handle and release memory allocated through C code? I apologize, I haven't used C and cgo before so my examples may need some clarification.
Lets say you've got some C library that you'd like to use and this library allocates some memory that needs to be freed manually. What I'd like to do is something like this:
package stuff
/*
#include <stuff.h>
*/
import "C"
type Stuff C.Stuff
func NewStuff() *Stuff {
stuff := Stuff(C.NewStuff()) // Allocate memory
// define the release function for the runtime to call
// when this object has no references to it (to release memory)
// In this case it's stuff.Free()
return stuff
}
func (s Stuff) Free() {
C.Free(C.Stuff(s)) // Release memory
}
Is there any way for the garbage collector to call Stuff.Free() when there are no references to *Stuff in the Go runtime?
Am I making sense here?
Perhaps a more direct question is: Is it possible to make the runtime automatically handle the cleanup of C allocated memory by writing a function that the runtime calls when there are zero references to that object?
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