Keyword Analysis & Research: pmemoid
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Code Sample: Create a C Persistent Memory “Hello World
pmem.io: An introduction to pmemobj (part 3) - types
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pmem.io: Type safety macros in libpmemobj
Jun 11, 2015 · This leads to a situation where each object must have two representations in the code: the PMEMoid and a typed pointer.. Anonymous unions. One of the possible solutions is to use anonymous unions which contain the PMEMoid and information about the type of the object - a pointer to the desired type. This pointer may be used for type checking in assignments and for conversion from PMEMoid to …
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Code Sample: Find Your Leaked Persistent Memory …
The first thing we do is to get the C pointer object (of type PMEMoid) for the head of our employee list. This pointer (raw_root) is used to check object type when iterating through the internal list (although in this case we only have objects of type employee).
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pmemobj_direct(3) — libpmemobj-dev — Debian unstable
The pmemobj_oid() function returns a PMEMoid handle to the object pointed to by addr. If addr is not from within a pmemobj pool, OID_NULL is returned. If addr is not the start of an object (does not point to the beginning of a valid allocation), the resulting PMEMoid can be safely used only with: • pmemobj_pool_by_oid() • pmemobj_direct()
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pmemobj_alloc(3) — libpmemobj-dev — Debian experimental
The PMEMoid of the allocated object is stored in oidp. If oidp is NULL, then the newly allocated object may be accessed only by iterating objects in the object container associated with the type number type_num, as described in POBJ_FOREACH(3). If oidp points to a memory location from the pmemobj heap, oidp is modified atomically.
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Persistent Memory Quick Start Programming Tutorial
PMEMoid value; /* next entry list pointer */ TOID(struct entry) next;
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pmemobj_action man page - libpmemobj - Library Functions
The pmemobj_set_value function prepares an action that, once published, will modify the memory location pointed to by ptr to value. The pmemobj_publish function publishes the provided set of actions. The publication is fail-safe atomic. Once done, the persistent …
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PMDK libpmemobj 例程1 读写持久化内存 - 代码先锋网
PMDK libpmemobj 例程1 读写持久化内存. (1) write and read the persistent memory. Key : PMEMobjpool pmemobj_create () // 创建持久化内存池. PMEMobjpool pmemobj_open () // 打开已创建的持久化内存池. PMEMoid pmemobj_root () // 得到持久化内存池的根节点. pmemobj_direct () // 得到根节点的指针. …
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Do you need to cast TOID to pmemoid?
We generally recommend using only macros, but if you ever need to ‘cast’ TOID to PMEMoid, you can do it like so: All of the macros that are not prefixed with either TOID_ or OID_ generally take typed pointers and return them as their result (like the POBJ_ROOT macro).
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What are the different types of pmemobj macros?
Most IDEs correctly evaluate those macros and automatic code completion for types works. Generally, two kinds of type-safety macros are distinguished: those that operate on raw PMEMoid - prefixed with OID_, and those that operate on typed TOID - prefixed with TOID_.
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What should the memory layout look like in pmemobj?
All persistent memory programs that use pmemobj should have a clearly defined memory layout, preferably in its own file. To provide run- and compile- time type-safety the use of special macros is required in addition to declaring structures. For example, a layout for our string storing example would look like this:
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