if (history != null && history.getDelUserList() != null && history.getDelUserList().contains("," + chatUserId + ",")) 这是java语言 帮我优化这个代码

时间: 2024-12-18 11:34:58 浏览: 38
这段Java代码检查`history`对象是否存在,并且它的`getDelUserList()`方法返回的列表是否包含特定用户ID。如果条件成立,即包含用户ID以逗号分隔的形式(`"," + chatUserId + ",")`,则执行某些操作。为了优化这段代码,可以考虑以下几点: 1. **避免字符串连接**:每次添加或检查都创建新的字符串可能会造成不必要的性能开销。如果`chatUserId`是一个常量,你可以先将其转换成字符串并缓存。 ```java String userIdKey = "," + chatUserId + ","; if (history != null && history.getDelUserList() != null && history.getDelUserList().contains(userIdKey)) { // ... } ``` 2. **使用HashSet或List集合**:如果你频繁地进行查找操作,将`getDelUserList()`转换为更高效的集合类型(如HashSet)可以提高查找速度,因为HashSet的查找时间复杂度是O(1)。 ```java Set<String> userList = new HashSet<>(Arrays.asList(history.getDelUserList().split(","))); if (userList.contains(userIdKey)) { // ... } ``` 这里假设`getDelUserList()`返回的是一个以逗号分隔的字符串数组。 3. **避免重复计算**:如果`userIdKey`在整个方法内部只使用一次,那就无需每次都生成它。 ```java if (history != null && history.getDelUserList() != null && Arrays.stream(history.getDelUserList().split(",")).anyMatch(s -> s.equals(userIdKey))) { // ... } ```
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/****************************************************************************** * * Copyright (C) 2010 - 2015 Xilinx, Inc. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of the Xilinx shall not be used * in advertising or otherwise to promote the sale, use or other dealings in * this Software without prior written authorization from Xilinx. * ******************************************************************************/ /*****************************************************************************/ /** * @file xttcps_rtc_example.c * * This example uses one timer/counter to make a real time clock. The number of * minutes and seconds is displayed on the console. * * * @note * * * MODIFICATION HISTORY: * * Ver Who Date Changes * ---- ------ -------- --------------------------------------------- * 1.00 drg/jz 01/23/10 First release * 3.01 pkp 01/30/16 Modified SetupTimer to remove XTtcps_Stop before TTC * configuration as it is added in xttcps.c in * XTtcPs_CfgInitialize * 3.2 mus 10/28/16 Updated TmrCntrSetup as per prototype of * XTtcPs_CalcIntervalFromFreq * ms 01/23/17 Modified xil_printf statement in main function to * ensure that "Successfully ran" and "Failed" strings * are available in all examples. This is a fix for * CR-965028. * ******************************************************************************/ /***************************** Include Files *********************************/ #include <stdio.h> #include <stdlib.h> #include "xparameters.h" #include "xstatus.h" #include "xil_io.h" #include "xil_exception.h" #include "xttcps.h" #include "xscugic.h" #include "xil_printf.h" /************************** Constant Definitions *****************************/ /* * The following constants map to the XPAR parameters created in the * xparameters.h file. They are only defined here such that a user can easily * change all the needed parameters in one place. */ #define TTC_TICK_DEVICE_ID XPAR_XTTCPS_0_DEVICE_ID #define TTC_TICK_INTR_ID XPAR_XTTCPS_0_INTR #define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID /* * Constants to set the basic operating parameters. * PWM_DELTA_DUTY is critical to the running time of the test. Smaller values * make the test run longer. */ #define TICK_TIMER_FREQ_HZ 100 /* Tick timer counter's output frequency */ #define TICKS_PER_CHANGE_PERIOD TICK_TIMER_FREQ_HZ /* Tick signals per update */ /**************************** Type Definitions *******************************/ typedef struct { u32 OutputHz; /* Output frequency */ XInterval Interval; /* Interval value */ u8 Prescaler; /* NO USED */ u16 Options; /* Option settings */ } TmrCntrSetup; /***************** Macros (Inline Functions) Definitions *********************/ /************************** Function Prototypes ******************************/ static int TmrRtcInterruptExample(void); /* Main test */ /* Set up routines for timer counters */ static int SetupTicker(void); static int SetupTimer(int DeviceID); /* Interleaved interrupt test for both timer counters */ static int WaitForDutyCycleFull(void); static int SetupInterruptSystem(u16 IntcDeviceID, XScuGic *IntcInstancePtr); static void TickHandler(void *CallBackRef); /************************** Variable Definitions *****************************/ static XTtcPs TtcPsInst; /* Timer counter instance */ static TmrCntrSetup SettingsTable= {TICK_TIMER_FREQ_HZ, 0, 0, 0}; /* Ticker timer counter initial setup, only output freq */ XScuGic InterruptController; /* Interrupt controller instance */ static u8 ErrorCount; /* Errors seen at interrupt time */ static volatile u8 UpdateFlag; /* Flag to update the seconds counter */ static u32 TickCount; /* Ticker interrupts between seconds change */ /*****************************************************************************/ /** * * This is the main function that calls the TTC RTC interrupt example. * * @param None * * @return * - XST_SUCCESS to indicate Success * - XST_FAILURE to indicate a Failure. * * @note None. * *****************************************************************************/ int main(void) { int Status; xil_printf("Starting Timer RTC Example"); Status = TmrRtcInterruptExample(); if (Status != XST_SUCCESS) { xil_printf("ttcps rtc Example Failed\r\n"); return XST_FAILURE; } xil_printf("Successfully ran ttcps rtc Example\r\n"); return XST_SUCCESS; } /*****************************************************************************/ /** * * This is the main function of the interrupt example. * * * @param None. * * @return XST_SUCCESS to indicate success, else XST_FAILURE to indicate * a Failure. * ****************************************************************************/ static int TmrRtcInterruptExample(void) { int Status; /* * Make sure the interrupts are disabled, in case this is being run * again after a failure. */ /* * Connect the Intc to the interrupt subsystem such that interrupts can * occur. This function is application specific. */ Status = SetupInterruptSystem(INTC_DEVICE_ID, &InterruptController); if (Status != XST_SUCCESS) { return XST_FAILURE; } /* * Set up the Ticker timer */ Status = SetupTicker(); if (Status != XST_SUCCESS) { return Status; } Status = WaitForDutyCycleFull(); if (Status != XST_SUCCESS) { return Status; } /* * Stop the counters */ XTtcPs_Stop(&TtcPsInst); return XST_SUCCESS; } /****************************************************************************/ /** * * This function sets up the Ticker timer. * * @param None * * @return XST_SUCCESS if everything sets up well, XST_FAILURE otherwise. * *****************************************************************************/ int SetupTicker(void) { int Status; TmrCntrSetup *TimerSetup; XTtcPs *TtcPsTick; TimerSetup = &SettingsTable; /* * Set up appropriate options for Ticker: interval mode without * waveform output. */ TimerSetup->Options |= (XTTCPS_OPTION_INTERVAL_MODE); /* * Calling the timer setup routine * . initialize device * . set options */ Status = SetupTimer(TTC_TICK_DEVICE_ID); if(Status != XST_SUCCESS) { return Status; } TtcPsTick = &TtcPsInst; /* * Connect to the interrupt controller */ Status = XScuGic_Connect(&InterruptController, TTC_TICK_INTR_ID, (Xil_InterruptHandler)TickHandler, (void *)TtcPsTick); if (Status != XST_SUCCESS) { return XST_FAILURE; } /* * Enable the interrupt for the Timer counter */ XScuGic_Enable(&InterruptController, TTC_TICK_INTR_ID); /* * Enable the interrupts for the tick timer/counter * We only care about the interval timeout. */ XTtcPs_EnableInterrupts(TtcPsTick, XTTCPS_IXR_INT_ENABLE); /* * Start the tick timer/counter */ XTtcPs_Start(TtcPsTick); return Status; } /****************************************************************************/ /** * * This function uses the interrupt inter-locking between the ticker timer * counter and the waveform output timer counter. When certain amount of * interrupts have happened to the ticker timer counter, a flag, UpdateFlag, * is set to true. * * * @param None * * @return XST_SUCCESS if duty cycle successfully reaches beyond 100, * otherwise XST_FAILURE. * *****************************************************************************/ int WaitForDutyCycleFull(void) { u32 seconds; /* * Initialize some variables used by the interrupts and in loops. */ ErrorCount = 0; seconds = 0; /* * Loop until two minutes passes. */ while (seconds <= 121) { /* * If error occurs, disable interrupts, and exit. */ if (0 != ErrorCount) { return XST_FAILURE; } /* * The Ticker interrupt sets a flag for update. */ if (UpdateFlag) { /* * Calculate the time setting here, not at the time * critical interrupt level. */ seconds++; UpdateFlag = FALSE; xil_printf("Time: %d\n\r", seconds); } } return XST_SUCCESS; } /****************************************************************************/ /** * * This function sets up a timer counter device, using the information in its * setup structure. * . initialize device * . set options * . set interval and prescaler value for given output frequency. * * @param DeviceID is the unique ID for the device. * * @return XST_SUCCESS if successful, otherwise XST_FAILURE. * *****************************************************************************/ int SetupTimer(int DeviceID) { int Status; XTtcPs_Config *Config; XTtcPs *Timer; TmrCntrSetup *TimerSetup; TimerSetup = &SettingsTable; Timer = &TtcPsInst; /* * Look up the configuration based on the device identifier */ Config = XTtcPs_LookupConfig(DeviceID); if (NULL == Config) { return XST_FAILURE; } /* * Initialize the device */ Status = XTtcPs_CfgInitialize(Timer, Config, Config->BaseAddress); if (Status != XST_SUCCESS) { return XST_FAILURE; } /* * Set the options */ XTtcPs_SetOptions(Timer, TimerSetup->Options); /* * Timer frequency is preset in the TimerSetup structure, * however, the value is not reflected in its other fields, such as * IntervalValue and PrescalerValue. The following call will map the * frequency to the interval and prescaler values. */ XTtcPs_CalcIntervalFromFreq(Timer, TimerSetup->OutputHz, &(TimerSetup->Interval), &(TimerSetup->Prescaler)); /* * Set the interval and prescale */ XTtcPs_SetInterval(Timer, TimerSetup->Interval); return XST_SUCCESS; } /****************************************************************************/ /** * * This function setups the interrupt system such that interrupts can occur. * This function is application specific since the actual system may or may not * have an interrupt controller. The TTC could be directly connected to a * processor without an interrupt controller. The user should modify this * function to fit the application. * * @param IntcDeviceID is the unique ID of the interrupt controller * @param IntcInstacePtr is a pointer to the interrupt controller * instance. * * @return XST_SUCCESS if successful, otherwise XST_FAILURE. * *****************************************************************************/ static int SetupInterruptSystem(u16 IntcDeviceID, XScuGic *IntcInstancePtr) { int Status; XScuGic_Config *IntcConfig; /* The configuration parameters of the interrupt controller */ /* * Initialize the interrupt controller driver */ IntcConfig = XScuGic_LookupConfig(IntcDeviceID); if (NULL == IntcConfig) { return XST_FAILURE; } Status = XScuGic_CfgInitialize(IntcInstancePtr, IntcConfig, IntcConfig->CpuBaseAddress); if (Status != XST_SUCCESS) { return XST_FAILURE; } /* * Connect the interrupt controller interrupt handler to the hardware * interrupt handling logic in the ARM processor. */ Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT, (Xil_ExceptionHandler) XScuGic_InterruptHandler, IntcInstancePtr); /* * Enable interrupts in the ARM */ Xil_ExceptionEnable(); return XST_SUCCESS; } /***************************************************************************/ /** * * This function is the handler which handles the periodic tick interrupt. * It updates its count, and set a flag to signal PWM timer counter to * update its duty cycle. * * This handler provides an example of how to handle data for the TTC and * is application specific. * * @param CallBackRef contains a callback reference from the driver, in * this case it is the instance pointer for the TTC driver. * * @return None. * *****************************************************************************/ static void TickHandler(void *CallBackRef) { u32 StatusEvent; /* * Read the interrupt status, then write it back to clear the interrupt. */ StatusEvent = XTtcPs_GetInterruptStatus((XTtcPs *)CallBackRef); XTtcPs_ClearInterruptStatus((XTtcPs *)CallBackRef, StatusEvent); if (0 != (XTTCPS_IXR_INT_ENABLE & StatusEvent)) { TickCount++; if (TICKS_PER_CHANGE_PERIOD == TickCount) { TickCount = 0; UpdateFlag = TRUE; } } else { /* * The Interval event should be the only one enabled. If it is * not it is an error */ ErrorCount++; } } 请详细分析一下以上的代码,并给出详细的解释

/home/wiseatc/.local/lib/python3.11/site-packages/jieba/_compat.py:18: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources W0703 16:30:36.069853 3914856 torch/distributed/run.py:766] W0703 16:30:36.069853 3914856 torch/distributed/run.py:766] ***************************************** W0703 16:30:36.069853 3914856 torch/distributed/run.py:766] Setting OMP_NUM_THREADS environment variable for each process to be 1 in default, to avoid your system being overloaded, please further tune the variable for optimal performance in your application as needed. W0703 16:30:36.069853 3914856 torch/distributed/run.py:766] ***************************************** /home/wiseatc/.local/lib/python3.11/site-packages/jieba/_compat.py:18: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,321 >> loading file tokenizer.model [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,322 >> loading file tokenizer.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,322 >> loading file added_tokens.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,322 >> loading file special_tokens_map.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,322 >> loading file tokenizer_config.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,322 >> loading file chat_template.jinja /home/wiseatc/.local/lib/python3.11/site-packages/jieba/_compat.py:18: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources /home/wiseatc/.local/lib/python3.11/site-packages/jieba/_compat.py:18: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources /home/wiseatc/.local/lib/python3.11/site-packages/jieba/_compat.py:18: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. import pkg_resources [INFO|tokenization_utils_base.py:2313] 2025-07-03 16:30:43,904 >> Special tokens have been added in the vocabulary, make sure the associated word embeddings are fine-tuned or trained. [INFO|configuration_utils.py:697] 2025-07-03 16:30:43,913 >> loading configuration file /mnt/data1/models/1.5B/config.json [INFO|configuration_utils.py:771] 2025-07-03 16:30:43,919 >> Model config Qwen2Config { "_name_or_path": "/mnt/data1/models/1.5B", "architectures": [ "Qwen2ForCausalLM" ], "attention_dropout": 0.0, "bos_token_id": 151643, "eos_token_id": 151643, "hidden_act": "silu", "hidden_size": 1536, "initializer_range": 0.02, "intermediate_size": 8960, "max_position_embeddings": 131072, "max_window_layers": 21, "model_type": "qwen2", "num_attention_heads": 12, "num_hidden_layers": 28, "num_key_value_heads": 2, "rms_norm_eps": 1e-06, "rope_scaling": null, "rope_theta": 10000, "sliding_window": 4096, "tie_word_embeddings": false, "torch_dtype": "bfloat16", "transformers_version": "4.49.0", "use_cache": true, "use_mrope": false, "use_sliding_window": false, "vocab_size": 151936 } [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,920 >> loading file tokenizer.model [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,920 >> loading file tokenizer.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,920 >> loading file added_tokens.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,920 >> loading file special_tokens_map.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,920 >> loading file tokenizer_config.json [INFO|tokenization_utils_base.py:2048] 2025-07-03 16:30:43,920 >> loading file chat_template.jinja [INFO|tokenization_utils_base.py:2313] 2025-07-03 16:30:44,493 >> Special tokens have been added in the vocabulary, make sure the associated word embeddings are fine-tuned or trained. /usr/local/lib/python3.11/dist-packages/torch/distributed/distributed_c10d.py:4631: UserWarning: No device id is provided via init_process_group or barrier . Using the current device set by the user. warnings.warn( # warn only once [rank1]:[W703 16:30:45.102845887 ProcessGroupNCCL.cpp:4718] [PG ID 0 PG GUID 0 Rank 1] using GPU 1 as device used by this process is currently unknown. This can potentially cause a hang if this rank to GPU mapping is incorrect. You can pecify device_id in init_process_group() to force use of a particular device. /usr/local/lib/python3.11/dist-packages/torch/distributed/distributed_c10d.py:4631: UserWarning: No device id is provided via init_process_group or barrier . Using the current device set by the user. warnings.warn( # warn only once [rank2]:[W703 16:30:45.126706430 ProcessGroupNCCL.cpp:4718] [PG ID 0 PG GUID 0 Rank 2] using GPU 2 as device used by this process is currently unknown. This can potentially cause a hang if this rank to GPU mapping is incorrect. 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