Search results
Results from the WOW.Com Content Network
This is a list of the instructions that make up the Java bytecode, an abstract machine language that is ultimately executed by the Java virtual machine. [1] The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language.
In computer architecture, the test-and-set CPU instruction (or instruction sequence) is designed to implement mutual exclusion in multiprocessor environments. Although a correct lock can be implemented with test-and-set, the test and test-and-set optimization lowers resource contention caused by bus locking, especially cache coherency protocol overhead on contended locks.
Java also has a new proposed API for SIMD instructions available in OpenJDK 17 in an incubator module. [16] It also has a safe fallback mechanism on unsupported CPUs to simple loops. Instead of providing an SIMD datatype, compilers can also be hinted to auto-vectorize some loops, potentially taking some assertions about the lack of data dependency.
Cache prefetching can be accomplished either by hardware or by software. [3]Hardware based prefetching is typically accomplished by having a dedicated hardware mechanism in the processor that watches the stream of instructions or data being requested by the executing program, recognizes the next few elements that the program might need based on this stream and prefetches into the processor's ...
Ehcache (/ ˈ iː eɪ tʃ k æ ʃ / EE-aytch-kash [3]) is an open source Java distributed cache for general-purpose caching, Java EE and light-weight containers [clarify]. [4] Ehcache is available under an Apache open source license. [1] Ehcache was developed by Greg Luck starting in 2003. In 2009, the project was purchased by Terracotta, which ...
A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. [1] A cache is a smaller, faster memory, located closer to a processor core, which stores copies of the data from frequently used main memory locations.
Increased Code Size: Unrolling increases the number of instructions, leading to larger program binaries. Higher Storage Requirements: The expanded code takes up more memory, which can be problematic for microcontrollers or embedded systems with limited storage. Instruction Cache Pressure: The unrolled loop consumes more space in the instruction ...
In computer architecture, a trace cache or execution trace cache is a specialized instruction cache which stores the dynamic stream of instructions known as trace. It helps in increasing the instruction fetch bandwidth and decreasing power consumption (in the case of Intel Pentium 4 ) by storing traces of instructions that have already been ...