Back to Basics: PointersIn this talk, we will discuss the low level foundations of what a raw pointer is--a variable that stores an address. We will then see some examples of raw pointers for creating data structures, passing pointer is a variable that stores the memory address of a specific object type ○ (Let’s look at an example) 13What is a Pointer? (2/8) ● A pointer is a variable that stores the memory address of a 14 ● px is a pointer ● px’s type is int* ○ px can stores addresses of integers.What is a Pointer? (3/8) ● A pointer is a variable that stores the memory address of a specific object type ● 150 码力 | 152 页 | 5.61 MB | 6 月前3- Techniques to Optimise Multi-threaded Data Building During Game Developmentthreads SpinLock is sync primitive - spins rather than sleeping Flat map is associative container Stores items in arrays - keys in sorted array - giving O(logn) access Speaker notesJOB SYSTEM • Schedules tasks • Some regions will take longer to process 16Pre-process data to create read-only world cache Stores static world contents - for quick access - no duplicated effort Beware of memory cost Need to divide area queries - multiple traversals might be required Speaker notesINTRODUCING THE GRID CACHE • Stores static world elements for quick queries • Consider it a sparse 3D array • Process to create: ▪ Partition0 码力 | 99 页 | 2.40 MB | 6 月前3
- Can't we just synthesize std::tuple_element from get?decltype(get(std::declval
declval ())); static constexpr auto stores_reference = std::same_as tc::temporary >()) ); static constexpr auto stores_reference = !tc::is_temporary ; using type = std::conditional_t< stores_reference, type_temporary, tc::remove_temporary_t 0 码力 | 31 页 | 282.80 KB | 6 月前3 - simd: How to Express Inherent Parallelism Efficiently Via Data-Parallel TypesOverview Example: Image Processing Programming Models Outlook Summary Data-Parallel Types One variable stores WT values. One operator signifies WT operations (element-wise). W for “width”; depends on type T ResearchMotivation std::simd Overview Example: Image Processing Programming Models Outlook Summary Loads & stores 1 class simd { 2 simd(contiguous_iterator auto it); 3 4 void 5 copy_from(contiguous_iterator simd
::size() elements from a contiguous range into the simd elements. • Stores do the reverse. • Consider loads & stores equivalent to dereferencing an iterator in the scalar case. Matthias Kretz 0 码力 | 160 页 | 8.82 MB | 6 月前3 - Back to Basics - Function Call ResolutionSaks Scope Regions and Name Lookup When the compiler encounters the declaration of a name, it stores that name and its attributes in a symbol table. When the compiler encounters a reference to // stores widget public: string name() const; // looks up string; stores name ~~~ }; string s; // looks up string; stores s widget w; // looks up widget; stores w s0 码力 | 44 页 | 1.30 MB | 6 月前3
- generic graph librariesatarget Vertex Requires: target) Inner range stores neighbor vertex id as tuple element Inner range stores neighbor vertex id as tuple element Inner range stores neighbor vertex id neighbor vertex id concept. Inner range has a target Vertex Requires: target() Inner range stores neighbor verlexid as Inner range stores tuple element neighbor vertex id vectorcvectorcaize_tyy vecrercvecrorcruplecatze0 码力 | 76 页 | 6.59 MB | 6 月前3
- Distributed Ranges: A Model for Building Distributed Data Structures, Algorithms, and Viewsstructure stores a number of segments - Access data through corresponding segment - We can build iteration on top of this (although it may be slow)Distributed Data Structures - Data structure stores a number segment_size_; vector0 码力 | 127 页 | 2.06 MB | 6 月前3
- A Relaxed Guide to memory_order_relaxedthat are only read after all other threads have terminated. ○ At which time there are no racing stores, so the canonical OOTA pattern cannot form. ● Ordering is provided by atomic_thread_fence(). ○ speculatively read bad values for r1 and r2. Thread 1’s bad behavior stores the value read by Thread 2 into y. Thread 2’s bad behavior stores the value read by Thread 1 into x. Formally. each thread’s relaxed0 码力 | 32 页 | 278.53 KB | 6 月前3
- C++ Memory Model: from C++11 to C++23operations that write to shared memory, whether they are read-modify-write operations or plain stores. The operation is then considered a write-release. Release semantics prevent memory reordering dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky std::atomic Performance: Stores ● On X86 atomic stores use xchg, and it is a full barrierAlex Dathskovsky | alex.dathskovsky@speedata.io |0 码力 | 112 页 | 5.17 MB | 6 月前3
- Building bridges: Leveraging C++ and ROS for simulators, sensor data and algorithmsthe result Node B Increments message value by 100 and publishes the result Node C Callback A: stores the latest value of message A Callback B: reads message A, computes A + B and publishes the result the result Node B Increments message value by 100 and publishes the result Node C Callback A: stores the latest value of message A Callback B: reads message A, computes A + B and publishes the result the result Node B Increments message value by 100 and publishes the result Node C Callback A: stores the latest value of message A Callback B: reads message A, computes A + B and publishes the result0 码力 | 38 页 | 2.17 MB | 6 月前3
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