内存映射区域处于堆与栈之间。 Linux内核使用 vm_area_struct 结构来表示一个独立的虚拟内存区域,由于每个不同质的虚拟内存区域功能和内部机制都不同,因此一个进程使用多个 vm_area_struct 结构来分别表示不同类型的虚拟内存区域。各个 vm_area_struct 结构使用链表或者树形结构链接,方便进程快速访问,如下图所示: vm...
*/ struct list_head anon_vma_chain; /* Serialized by mmap_sem & page_table_lock */ struct anon_vma *anon_vma; /* Serialized by page_table_lock */ /* Function pointers to deal with this struct. */ const struct vm_operations_struct * vm_ops; unsigned long vm_pgoff; /* Offset (w...
* page_table_lock */struct anon_vma*anon_vma;/* Serialized by page_table_lock *//* Function pointers to deal with this struct. */conststruct vm_operations_struct*vm_ops;/* Information about our backing store: */unsigned long vm_pgoff;/* Offset (within vm_file) in PAGE_SIZE units, ...
An anonymous MAP_PRIVATE, stack * or brk vma (with NULL file) can only be in an anon_vma list. */ struct list_head anon_vma_chain; /* Serialized by mmap_sem & * page_table_lock */ struct anon_vma *anon_vma; /* Serialized by page_table_lock */ /* Function pointers to deal ...
* page_table_lock */struct anon_vma*anon_vma;/* Serialized by page_table_lock *//* Function pointers to deal with this struct. */conststruct vm_operations_struct*vm_ops;/* Information about our backing store: */unsigned long vm_pgoff;/* Offset (within vm_file) in PAGE_SIZE ...
Linux-mmap函数介绍(转) mmap函数是unix/linux下的系统调用,来看《Unix Netword programming》卷二12.2节对mmap的介绍: The mmap function maps either a file or a Posix shared memory object into the address space of a process.We use this function for three purposes: ...
C Programming 原文链接:https://linuxhint.com/using_mmap_function_linux/ How to use mmap function in C language? 3 years ago by Bamdeb Ghosh The
struct vm_area_struct { struct file * vm_file; /* File we map to (can be NULL). */ /* Function pointers to deal with this struct. */ const struct vm_operations_struct *vm_ops; } struct vm_operations_struct { vm_fault_t (*fault)(struct vm_fault *vmf); void (*map_pages)(st...
/* Function pointers to deal with this struct. */ const struct vm_operations_struct *vm_ops; /* Information about our backing store: */ unsigned long vm_pgoff;/* Offset (within vm_file) in PAGE_SIZE units, *not* PAGE_CACHE_SIZE */ struct file * vm_file;/* File we map to (can...
Linux-mmap函数介绍(转) mmap函数是unix/linux下的系统调用,来看《Unix Netword programming》卷二12.2节对mmap的介绍: The mmap function maps either a file or a Posix shared memory object into the address space of a process.We use this function for three purposes: 1. with a regular file to ...